[Asterisk-Users] Extending E1's over a Satellite link
hi I want to compress and trunk 2E1 capacity over a satellite SCPC link using asterisk. I am nw to asterisk and I need suggestions on how to implement this. Best regards Arinze ALL-NEW Yahoo! Messenger - all new features - even more fun! ___ Asterisk-Users mailing list [EMAIL PROTECTED] http://lists.digium.com/mailman/listinfo/asterisk-users To UNSUBSCRIBE or update options visit: http://lists.digium.com/mailman/listinfo/asterisk-users
Re: [Asterisk-Users] Extending E1's over a Satellite link
asterisk is a pbx software. I don't think there is a compression and uncompression utility except codec conversions. Even in those cases you can be sure that there will be loss of data as there is no lossless compression. If you have any satellite transmission and reception card which can be interfaced for voice communication with asterisk kindly share your views here, we can discuss more on that. Asterisk sends calls over internet very efficiently by reducing the ethernet overhead and the channel overheads and that is only in IAX protocol. May be this you can consider to extend for satellite communication. If you have more information kindly let us know about it whether anything of the above matches to your interest. -Kannaiyan - Original Message - From: Arinze Izukanne To: [EMAIL PROTECTED] Sent: Monday, September 13, 2004 11:41 PM Subject: [Asterisk-Users] Extending E1's over a Satellite link hi I want to compress and trunk 2E1 capacity over a satellite SCPC link using asterisk. I am nw to asterisk and I need suggestions on how to implement this. Best regards Arinze ALL-NEW Yahoo! Messenger - all new features - even more fun! ___Asterisk-Users mailing list[EMAIL PROTECTED]http://lists.digium.com/mailman/listinfo/asterisk-usersTo UNSUBSCRIBE or update options visit: http://lists.digium.com/mailman/listinfo/asterisk-users ___ Asterisk-Users mailing list [EMAIL PROTECTED] http://lists.digium.com/mailman/listinfo/asterisk-users To UNSUBSCRIBE or update options visit: http://lists.digium.com/mailman/listinfo/asterisk-users
Re: [Asterisk-Users] Extending E1's over a Satellite link
OK. What I am thinking is, It is possible to install a server running Asterisk on each end of the Satellite link, with an E1 card in each Asterisk; and the boxes are configured to pick up incomming calls on the E1 channels and pass them to the other box across the link to the other Asterisk PBX which in turn completes the call via the PSTN E1 on that side. Basically the aim is to provide a solution that works similar to RAD's VMUX but using Asterisk as the engine. I expect there would be codec translation along the way. I have this concept but how to implement it is another issue. I need someone who has experience with Asterisk already to tell me how feasible this is and to what extent it would achieve the aim of reducing bandwidth and maintaining minimal latency. Best regards Arinze Kannaiyan Natesan <[EMAIL PROTECTED]> wrote: asterisk is a pbx software. I don't think there is a compression and uncompression utility except codec conversions. Even in those cases you can be sure that there will be loss of data as there is no lossless compression. If you have any satellite transmission and reception card which can be interfaced for voice communication with asterisk kindly share your views here, we can discuss more on that. Asterisk sends calls over internet very efficiently by reducing the ethernet overhead and the channel overheads and that is only in IAX protocol. May be this you can consider to extend for satellite communication. If you have more information kindly let us know about it whether anything of the above matches to your interest. -Kannaiyan - Original Message - From: Arinze Izukanne To: [EMAIL PROTECTED] Sent: Monday, September 13, 2004 11:41 PM Subject: [Asterisk-Users] Extending E1's over a Satellite link hi I want to compress and trunk 2E1 capacity over a satellite SCPC link using asterisk. I am nw to asterisk and I need suggestions on how to implement this. Best regards Arinze ALL-NEW Yahoo! Messenger - all new features - even more fun! ___Asterisk-Users mailing list[EMAIL PROTECTED]http://lists.digium.com/mailman/listinfo/asterisk-usersTo UNSUBSCRIBE or update options visit: http://lists.digium.com/mailman/listinfo/asterisk-users___Asterisk-Users mailing list[EMAIL PROTECTED]http://lists.digium.com/mailman/listinfo/asterisk-usersTo UNSUBSCRIBE or update options visit:http://lists.digium.com/mailman/listinfo/asterisk-users ALL-NEW Yahoo! Messenger - all new features - even more fun! ___ Asterisk-Users mailing list [EMAIL PROTECTED] http://lists.digium.com/mailman/listinfo/asterisk-users To UNSUBSCRIBE or update options visit: http://lists.digium.com/mailman/listinfo/asterisk-users
RE: [Asterisk-Users] Extending E1's over a Satellite link
A full E1 is a LOT of bandwith to try and push over a
satellite link.
John Todd has reported success with calls via satellite.
The primary problem you face with a satellite link is, or
course, latency.
There are ways of improving QoS over satellite links.
Paul
Paul
Mahler [EMAIL PROTECTED]
Signate, LLC665 Third
StreetSuite 100San Francisco,
CA 94107-1901 Asterisk Services and
Training
From: [EMAIL PROTECTED]
[mailto:[EMAIL PROTECTED] On Behalf Of Arinze
IzukanneSent: Monday, September 13, 2004 7:24 PMTo:
Asterisk Users Mailing List - Non-Commercial DiscussionSubject: Re:
[Asterisk-Users] Extending E1's over a Satellite link
OK. What I am thinking is, It is possible to install a server
running Asterisk on each end of the Satellite link, with an E1 card in
each Asterisk; and the boxes are configured to pick up incomming calls
on the E1 channels and pass them to the other box across the link to the other
Asterisk PBX which in turn completes the call via the PSTN E1 on that
side.
Basically the aim is to provide a solution that works similar to RAD's
VMUX but using Asterisk as the engine.
I expect there would be codec translation along the way.
I have this concept but how to implement it is another issue. I need
someone who has experience with Asterisk already to tell me how feasible this
is and to what extent it would achieve the aim of reducing bandwidth and
maintaining minimal latency.
Best regards
Arinze
Kannaiyan Natesan <[EMAIL PROTECTED]>
wrote:
asterisk is a pbx software. I don't think there is
a compression and uncompression utility except codec conversions. Even
in those cases you can be sure that there will be loss of data as there is
no lossless compression.
If you have any satellite transmission and reception card
which can be interfaced for voice communication with asterisk kindly share
your views here, we can discuss more on that.
Asterisk sends calls over internet very efficiently by
reducing the ethernet overhead and the channel overheads and that is only in
IAX protocol. May be this you can consider to extend for satellite
communication.
If you have more information kindly let us know about it
whether anything of the above matches to your interest.
-Kannaiyan
- Original Message -
From:
Arinze
Izukanne
To: [EMAIL PROTECTED]
Sent: Monday, September 13, 2004
11:41 PM
Subject: [Asterisk-Users] Extending
E1's over a Satellite link
hi
I want to compress and trunk 2E1 capacity over a satellite
SCPC link using asterisk. I am nw to asterisk and I need suggestions
on how to implement this.
Best regards
Arinze
ALL-NEW Yahoo!
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RE: [Asterisk-Users] Extending E1's over a Satellite link
Guys: I routinely run multiple phones over our satellite system (I'm the VP of Network Services at SDN Global, a satellite bandwidth provider located in Charlotte NC, US). Just last week I went to West Palm Beach, FL US and turned up a 10 phone emergency call center, complete with ACD queues for an insurance company. We were able to run all ten phones (Cisco 7960Gs, SIP) on G.729 codecs back to my * server in Charlotte NC US. No special settings were required on * or the phones. The satellite system *must* support *REAL* QoS and must have jitter < ~100ms. Traditional satellite systems have *lots* more jitter than that. The actual latency _doesn't matter_ as long as the jitter is steady. We are even doing 'double-hop' phone calls successfully, where the latency is double the normal latency. Anyone that wants more detailed info contact me off-list. Tim McKee VP Network Services SDN Global [EMAIL PROTECTED] http://www.sdnglobal.com From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf Of Paul MahlerSent: Tuesday, September 14, 2004 4:36 PMTo: 'Asterisk Users Mailing List - Non-Commercial Discussion'Subject: RE: [Asterisk-Users] Extending E1's over a Satellite link A full E1 is a LOT of bandwith to try and push over a satellite link. John Todd has reported success with calls via satellite. The primary problem you face with a satellite link is, or course, latency. There are ways of improving QoS over satellite links. Paul Paul Mahler [EMAIL PROTECTED] Signate, LLC665 Third StreetSuite 100San Francisco, CA 94107-1901 Asterisk Services and Training From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf Of Arinze IzukanneSent: Monday, September 13, 2004 7:24 PMTo: Asterisk Users Mailing List - Non-Commercial DiscussionSubject: Re: [Asterisk-Users] Extending E1's over a Satellite link OK. What I am thinking is, It is possible to install a server running Asterisk on each end of the Satellite link, with an E1 card in each Asterisk; and the boxes are configured to pick up incomming calls on the E1 channels and pass them to the other box across the link to the other Asterisk PBX which in turn completes the call via the PSTN E1 on that side. Basically the aim is to provide a solution that works similar to RAD's VMUX but using Asterisk as the engine. I expect there would be codec translation along the way. I have this concept but how to implement it is another issue. I need someone who has experience with Asterisk already to tell me how feasible this is and to what extent it would achieve the aim of reducing bandwidth and maintaining minimal latency. Best regards Arinze Kannaiyan Natesan <[EMAIL PROTECTED]> wrote: asterisk is a pbx software. I don't think there is a compression and uncompression utility except codec conversions. Even in those cases you can be sure that there will be loss of data as there is no lossless compression. If you have any satellite transmission and reception card which can be interfaced for voice communication with asterisk kindly share your views here, we can discuss more on that. Asterisk sends calls over internet very efficiently by reducing the ethernet overhead and the channel overheads and that is only in IAX protocol. May be this you can consider to extend for satellite communication. If you have more information kindly let us know about it whether anything of the above matches to your interest. -Kannaiyan - Original Message - From: Arinze Izukanne To: [EMAIL PROTECTED] Sent: Monday, September 13, 2004 11:41 PM Subject: [Asterisk-Users] Extending E1's over a Satellite link hi I want to compress and trunk 2E1 capacity over a satellite SCPC link using asterisk. I am nw to asterisk and I need suggestions on how to implement this. Best regards Arinze ALL-NEW Yahoo! Messenger - all new features - even more fun! ___Asterisk-Users mailing list[EMAIL PROTECTED]http://lists.digium.com/mailman/listinfo/asterisk-usersTo UNSUBSCRIBE or update options visit: http://lists.digium.com/mailman/listinfo/asterisk-users___Asterisk-Users mailing list[EMAIL PROTECTED]http://lists.digium.com/mailman/listinfo/asterisk-usersTo UNSUBSCRIBE or update options visit:http://lists.digium.com/mailman/listinfo/asterisk-users ALL-NEW Yahoo! Messenger - all new features - even more fun! <>
Re: [Asterisk-Users] Extending E1's over a Satellite link
Tim McKee wrote: Guys: I routinely run multiple phones over our satellite system (I'm the VP of Network Services at SDN Global, a satellite bandwidth provider located in Charlotte NC, US). Just last week I went to West Palm Beach, FL US and turned up a 10 phone emergency call center, complete with ACD queues for an insurance company. We were able to run all ten phones (Cisco 7960Gs, SIP) on G.729 codecs back to my * server in Charlotte NC US. No special settings were required on * or the phones. The satellite system *must* support *REAL* QoS and must have jitter < ~100ms. Traditional satellite systems have *lots* more jitter than that. The actual latency _doesn't matter_ as long as the jitter is steady. We are even doing 'double-hop' phone calls successfully, where the latency is double the normal latency. Anyone that wants more detailed info contact me off-list. Out of sheer curisity, the delay itself doesn't make the conversation 'bad' (meaning, walkie-talkie/roger-and-over-like ?) The codec itself should introduce some dozens of ms, but the satellite, is not at least 300ms one way or something like that ? adding the codecs, and the jitter buffers and etc..I wonder how good/bad is it ? ___ Asterisk-Users mailing list [EMAIL PROTECTED] http://lists.digium.com/mailman/listinfo/asterisk-users To UNSUBSCRIBE or update options visit: http://lists.digium.com/mailman/listinfo/asterisk-users
RE: [Asterisk-Users] Extending E1's over a Satellite link
Actually, a single hop satellite conversation isn't much worse than some cell phone systems. ~350ms latency. After a few moments of talking the normal person adjusts to it without much notice. Indeed, many overseas links in the past (and present for that matter) are done via satellite. Tim -Original Message- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf Of Julio Arruda Sent: Tuesday, September 14, 2004 5:33 PM To: Asterisk Users Mailing List - Non-Commercial Discussion Subject: Re: [Asterisk-Users] Extending E1's over a Satellite link Tim McKee wrote: > Guys: > > I routinely run multiple phones over our satellite system (I'm the VP > of Network Services at SDN Global, a satellite bandwidth provider > located in Charlotte NC, US). > > Just last week I went to West Palm Beach, FL US and turned up a 10 > phone emergency call center, complete with ACD queues for an insurance company. > We were able to run all ten phones (Cisco 7960Gs, SIP) on G.729 codecs > back to my * server in Charlotte NC US. No special settings were > required on * or the phones. > > The satellite system *must* support *REAL* QoS and must have jitter < > ~100ms. Traditional satellite systems have *lots* more jitter than that. > The actual latency _doesn't matter_ as long as the jitter is steady. > We are even doing 'double-hop' phone calls successfully, where the > latency is double the normal latency. > > Anyone that wants more detailed info contact me off-list. Out of sheer curisity, the delay itself doesn't make the conversation 'bad' (meaning, walkie-talkie/roger-and-over-like ?) The codec itself should introduce some dozens of ms, but the satellite, is not at least 300ms one way or something like that ? adding the codecs, and the jitter buffers and etc..I wonder how good/bad is it ? ___ Asterisk-Users mailing list [EMAIL PROTECTED] http://lists.digium.com/mailman/listinfo/asterisk-users To UNSUBSCRIBE or update options visit: http://lists.digium.com/mailman/listinfo/asterisk-users ___ Asterisk-Users mailing list [EMAIL PROTECTED] http://lists.digium.com/mailman/listinfo/asterisk-users To UNSUBSCRIBE or update options visit: http://lists.digium.com/mailman/listinfo/asterisk-users
RE: [Asterisk-Users] Extending E1's over a Satellite link
Expanding on this comment... The insurance company's customer service staff (definitely not techies) had no trouble at all adjusting to the latency, indeed, they didn't even appear to notice it... They had considerably more trouble remembering how to do a blind transfer to the spanish speakers... Tim -Original Message- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf Of Tim McKee Sent: Tuesday, September 14, 2004 9:45 PM To: [EMAIL PROTECTED]; 'Asterisk Users Mailing List - Non-Commercial Discussion' Subject: RE: [Asterisk-Users] Extending E1's over a Satellite link Actually, a single hop satellite conversation isn't much worse than some cell phone systems. ~350ms latency. After a few moments of talking the normal person adjusts to it without much notice. Indeed, many overseas links in the past (and present for that matter) are done via satellite. Tim -Original Message- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf Of Julio Arruda Sent: Tuesday, September 14, 2004 5:33 PM To: Asterisk Users Mailing List - Non-Commercial Discussion Subject: Re: [Asterisk-Users] Extending E1's over a Satellite link Tim McKee wrote: > Guys: > > I routinely run multiple phones over our satellite system (I'm the VP > of Network Services at SDN Global, a satellite bandwidth provider > located in Charlotte NC, US). > > Just last week I went to West Palm Beach, FL US and turned up a 10 > phone emergency call center, complete with ACD queues for an insurance company. > We were able to run all ten phones (Cisco 7960Gs, SIP) on G.729 codecs > back to my * server in Charlotte NC US. No special settings were > required on * or the phones. > > The satellite system *must* support *REAL* QoS and must have jitter < > ~100ms. Traditional satellite systems have *lots* more jitter than that. > The actual latency _doesn't matter_ as long as the jitter is steady. > We are even doing 'double-hop' phone calls successfully, where the > latency is double the normal latency. > > Anyone that wants more detailed info contact me off-list. Out of sheer curisity, the delay itself doesn't make the conversation 'bad' (meaning, walkie-talkie/roger-and-over-like ?) The codec itself should introduce some dozens of ms, but the satellite, is not at least 300ms one way or something like that ? adding the codecs, and the jitter buffers and etc..I wonder how good/bad is it ? ___ Asterisk-Users mailing list [EMAIL PROTECTED] http://lists.digium.com/mailman/listinfo/asterisk-users To UNSUBSCRIBE or update options visit: http://lists.digium.com/mailman/listinfo/asterisk-users ___ Asterisk-Users mailing list [EMAIL PROTECTED] http://lists.digium.com/mailman/listinfo/asterisk-users To UNSUBSCRIBE or update options visit: http://lists.digium.com/mailman/listinfo/asterisk-users ___ Asterisk-Users mailing list [EMAIL PROTECTED] http://lists.digium.com/mailman/listinfo/asterisk-users To UNSUBSCRIBE or update options visit: http://lists.digium.com/mailman/listinfo/asterisk-users
RE: [Asterisk-Users] Extending E1's over a Satellite link
Being that its a lot of Bandwidth, I need to compress the channels to use less bandwidth on the transfer. TDMoE is ruled out. What can I do with Asterisk to achieve this aim. Best regards Arinze Izukanne --- Paul Mahler <[EMAIL PROTECTED]> wrote: > A full E1 is a LOT of bandwith to try and push over > a satellite link. > > John Todd has reported success with calls via > satellite. > > The primary problem you face with a satellite link > is, or course, latency. > > There are ways of improving QoS over satellite > links. > > Paul > > > > > Paul Mahler > <mailto:[EMAIL PROTECTED]> [EMAIL PROTECTED] > <http://www.signate.com/> > Signate, LLC > 665 Third Street > Suite 100 > San Francisco, CA > 94107-1901 > > Asterisk Services and Training > > > > > > > > > > > _ > > From: [EMAIL PROTECTED] > [mailto:[EMAIL PROTECTED] On > Behalf Of Arinze > Izukanne > Sent: Monday, September 13, 2004 7:24 PM > To: Asterisk Users Mailing List - Non-Commercial > Discussion > Subject: Re: [Asterisk-Users] Extending E1's over a > Satellite link > > > OK. What I am thinking is, It is possible to install > a server running > Asterisk on each end of the Satellite link, with an > E1 card in each > Asterisk; and the boxes are configured to pick up > incomming calls on the E1 > channels and pass them to the other box across the > link to the other > Asterisk PBX which in turn completes the call via > the PSTN E1 on that side. > > Basically the aim is to provide a solution that > works similar to RAD's VMUX > but using Asterisk as the engine. > > I expect there would be codec translation along the > way. > > I have this concept but how to implement it is > another issue. I need someone > who has experience with Asterisk already to tell me > how feasible this is and > to what extent it would achieve the aim of reducing > bandwidth and > maintaining minimal latency. > > > Best regards > > Arinze > > > Kannaiyan Natesan <[EMAIL PROTECTED]> wrote: > > asterisk is a pbx software. I don't think there is a > compression and > uncompression utility except codec conversions. Even > in those cases you can > be sure that there will be loss of data as there is > no lossless compression. > > If you have any satellite transmission and reception > card which can be > interfaced for voice communication with asterisk > kindly share your views > here, we can discuss more on that. > > Asterisk sends calls over internet very efficiently > by reducing the ethernet > overhead and the channel overheads and that is only > in IAX protocol. May be > this you can consider to extend for satellite > communication. > > If you have more information kindly let us know > about it whether anything of > the above matches to your interest. > > -Kannaiyan > > > - Original Message - > From: Arinze <mailto:[EMAIL PROTECTED]> > Izukanne > To: [EMAIL PROTECTED] > Sent: Monday, September 13, 2004 11:41 PM > Subject: [Asterisk-Users] Extending E1's over a > Satellite link > > hi > I want to compress and trunk 2E1 capacity over a > satellite SCPC link using > asterisk. I am nw to asterisk and I need suggestions > on how to implement > this. > > Best regards > > Arinze > > > > _ > > > <http://uk.rd.yahoo.com/evt=21626/*http://uk.messenger.yahoo.com> > ALL-NEW > Yahoo! Messenger - all new features - even more fun! > > > > > _ > > > > > ___ > Asterisk-Users mailing list > [EMAIL PROTECTED] > http://lists.digium.com/mailman/listinfo/asterisk-users > To UNSUBSCRIBE or update options visit: > > http://lists.digium.com/mailman/listinfo/asterisk-users > > ___ > Asterisk-Users mailing list > [EMAIL PROTECTED] > http://lists.digium.com/mailman/listinfo/asterisk-users > To UNSUBSCRIBE or update options visit: > http://lists.digium.com/mailman/listinfo/asterisk-users > > > > _ > > > <http://uk.rd.yahoo.com/evt=21626/*http://uk.messenger.yahoo.com> > ALL-NEW > Yahoo! Messenger - all new features - even more fun! > > > > ___ > Asterisk-Users mailing list > [EMAIL PROTECTED] > http://lists.digium.com/mailman/listinfo/asterisk-users > To UNSUBSCRIBE or update options visit: > http://lists.digium.com/mailman/listinfo/asterisk-users ___ALL-NEW Yahoo! Messenger - all new features - even more fun! http://uk.messenger.yahoo.com ___ Asterisk-Users mailing list [EMAIL PROTECTED] http://lists.digium.com/mailman/listinfo/asterisk-users To UNSUBSCRIBE or update options visit: http://lists.digium.com/mailman/listinfo/asterisk-users
RE: [Asterisk-Users] Extending E1's over a Satellite link
I use G.729 as the codec and use compressed RTP (CRTP) to reduce each call's bandwidth. Over satellite and based on slot assignment overhead, that equates to approximately 17Kbps bidirectional per call. I haven't tried using IAX trunking, but I suppose you could transcode and use one of the even lower bandwidth codecs (depending on voice quality). I'm not sure where you plan on using this, just be aware that some languages, particulary those with lots of tonal qualities, don't do well with some codecs. Physical testing is critical. tim -Original Message- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf Of Arinze Izukanne Sent: Wednesday, September 15, 2004 8:26 AM To: Asterisk Users Mailing List - Non-Commercial Discussion Subject: RE: [Asterisk-Users] Extending E1's over a Satellite link Being that its a lot of Bandwidth, I need to compress the channels to use less bandwidth on the transfer. TDMoE is ruled out. What can I do with Asterisk to achieve this aim. Best regards Arinze Izukanne --- Paul Mahler <[EMAIL PROTECTED]> wrote: > A full E1 is a LOT of bandwith to try and push over a satellite link. > > John Todd has reported success with calls via satellite. > > The primary problem you face with a satellite link is, or course, > latency. > > There are ways of improving QoS over satellite links. > > Paul > > > > > Paul Mahler > <mailto:[EMAIL PROTECTED]> [EMAIL PROTECTED] > <http://www.signate.com/> > Signate, LLC > 665 Third Street > Suite 100 > San Francisco, CA > 94107-1901 > > Asterisk Services and Training > > > > > > > > > > > _ > > From: [EMAIL PROTECTED] > [mailto:[EMAIL PROTECTED] On Behalf Of Arinze > Izukanne > Sent: Monday, September 13, 2004 7:24 PM > To: Asterisk Users Mailing List - Non-Commercial Discussion > Subject: Re: [Asterisk-Users] Extending E1's over a Satellite link > > > OK. What I am thinking is, It is possible to install a server running > Asterisk on each end of the Satellite link, with an > E1 card in each > Asterisk; and the boxes are configured to pick up incomming calls on > the E1 channels and pass them to the other box across the link to the > other Asterisk PBX which in turn completes the call via the PSTN E1 on > that side. > > Basically the aim is to provide a solution that works similar to RAD's > VMUX but using Asterisk as the engine. > > I expect there would be codec translation along the way. > > I have this concept but how to implement it is another issue. I need > someone who has experience with Asterisk already to tell me how > feasible this is and to what extent it would achieve the aim of > reducing bandwidth and maintaining minimal latency. > > > Best regards > > Arinze > > > Kannaiyan Natesan <[EMAIL PROTECTED]> wrote: > > asterisk is a pbx software. I don't think there is a compression and > uncompression utility except codec conversions. Even in those cases > you can be sure that there will be loss of data as there is no > lossless compression. > > If you have any satellite transmission and reception card which can be > interfaced for voice communication with asterisk kindly share your > views here, we can discuss more on that. > > Asterisk sends calls over internet very efficiently by reducing the > ethernet overhead and the channel overheads and that is only in IAX > protocol. May be this you can consider to extend for satellite > communication. > > If you have more information kindly let us know about it whether > anything of the above matches to your interest. > > -Kannaiyan > > > - Original Message - > From: Arinze <mailto:[EMAIL PROTECTED]> Izukanne > To: [EMAIL PROTECTED] > Sent: Monday, September 13, 2004 11:41 PM > Subject: [Asterisk-Users] Extending E1's over a Satellite link > > hi > I want to compress and trunk 2E1 capacity over a satellite SCPC link > using asterisk. I am nw to asterisk and I need suggestions on how to > implement this. > > Best regards > > Arinze > > > > _ > > > <http://uk.rd.yahoo.com/evt=21626/*http://uk.messenger.yahoo.com> > ALL-NEW > Yahoo! Messenger - all new features - even more fun! > > > > > _ > > > > > ___ > Asterisk-Users mailing list > [EMAIL PROTECTED] > http://lists.digium.com/mailman/listinfo/asterisk-users > To UNSUBSCRIBE or update options visit: > > http://lists.digium.com/mailman/listinfo/asterisk-users > > __
Re: [Asterisk-Users] Extending E1's over a Satellite link
Well Julio, in countries where there are no reliable regional communication backbones with lower return times, satellites are used and in most cases the quality is outstanding for a good implementation even for a double hop. I could give you a call over a satellite link, G729 and latency of up to 650ms. Best regards Arinze Izukanne --- Julio Arruda <[EMAIL PROTECTED]> wrote: > Tim McKee wrote: > > Guys: > > > > I routinely run multiple phones over our satellite > system (I'm the VP of > > Network Services at SDN Global, a satellite > bandwidth provider located in > > Charlotte NC, US). > > > > Just last week I went to West Palm Beach, FL US > and turned up a 10 phone > > emergency call center, complete with ACD queues > for an insurance company. > > We were able to run all ten phones (Cisco 7960Gs, > SIP) on G.729 codecs back > > to my * server in Charlotte NC US. No special > settings were required on * > > or the phones. > > > > The satellite system *must* support *REAL* QoS and > must have jitter < > > ~100ms. Traditional satellite systems have *lots* > more jitter than that. > > The actual latency _doesn't matter_ as long as the > jitter is steady. We are > > even doing 'double-hop' phone calls successfully, > where the latency is > > double the normal latency. > > > > Anyone that wants more detailed info contact me > off-list. > > Out of sheer curisity, the delay itself doesn't make > the conversation > 'bad' (meaning, walkie-talkie/roger-and-over-like ?) > The codec itself should introduce some dozens of ms, > but the satellite, > is not at least 300ms one way or something like that > ? adding the > codecs, and the jitter buffers and etc..I wonder how > good/bad is it ? > ___ > Asterisk-Users mailing list > [EMAIL PROTECTED] > http://lists.digium.com/mailman/listinfo/asterisk-users > To UNSUBSCRIBE or update options visit: > > http://lists.digium.com/mailman/listinfo/asterisk-users > ___ALL-NEW Yahoo! Messenger - all new features - even more fun! http://uk.messenger.yahoo.com ___ Asterisk-Users mailing list [EMAIL PROTECTED] http://lists.digium.com/mailman/listinfo/asterisk-users To UNSUBSCRIBE or update options visit: http://lists.digium.com/mailman/listinfo/asterisk-users
Re: [Asterisk-Users] Extending E1's over a Satellite link
We have a satellite line and using IAX. Everything work fine. Latency about 620ms - 680ms Greetings. - Original Message - From: "Arinze Izukanne" <[EMAIL PROTECTED]> To: <[EMAIL PROTECTED]>; "Asterisk Users Mailing List - Non-Commercial Discussion" <[EMAIL PROTECTED]> Sent: Wednesday, September 15, 2004 9:40 AM Subject: Re: [Asterisk-Users] Extending E1's over a Satellite link > Well Julio, in countries where there are no reliable > regional communication backbones with lower return > times, satellites are used and in most cases the > quality is outstanding for a good implementation even > for a double hop. > > I could give you a call over a satellite link, G729 > and latency of up to 650ms. > > > Best regards > > Arinze Izukanne > > > --- Julio Arruda <[EMAIL PROTECTED]> > wrote: > > Tim McKee wrote: > > > Guys: > > > > > > I routinely run multiple phones over our satellite > > system (I'm the VP of > > > Network Services at SDN Global, a satellite > > bandwidth provider located in > > > Charlotte NC, US). > > > > > > Just last week I went to West Palm Beach, FL US > > and turned up a 10 phone > > > emergency call center, complete with ACD queues > > for an insurance company. > > > We were able to run all ten phones (Cisco 7960Gs, > > SIP) on G.729 codecs back > > > to my * server in Charlotte NC US. No special > > settings were required on * > > > or the phones. > > > > > > The satellite system *must* support *REAL* QoS and > > must have jitter < > > > ~100ms. Traditional satellite systems have *lots* > > more jitter than that. > > > The actual latency _doesn't matter_ as long as the > > jitter is steady. We are > > > even doing 'double-hop' phone calls successfully, > > where the latency is > > > double the normal latency. > > > > > > Anyone that wants more detailed info contact me > > off-list. > > > > Out of sheer curisity, the delay itself doesn't make > > the conversation > > 'bad' (meaning, walkie-talkie/roger-and-over-like ?) > > The codec itself should introduce some dozens of ms, > > but the satellite, > > is not at least 300ms one way or something like that > > ? adding the > > codecs, and the jitter buffers and etc..I wonder how > > good/bad is it ? > > ___ > > Asterisk-Users mailing list > > [EMAIL PROTECTED] > > > http://lists.digium.com/mailman/listinfo/asterisk-users > > To UNSUBSCRIBE or update options visit: > > > > > http://lists.digium.com/mailman/listinfo/asterisk-users > > > > > > > > ___ALL-NEW Yahoo! Messenger - all new features - even more fun! http://uk.messenger.yahoo.com > ___ > Asterisk-Users mailing list > [EMAIL PROTECTED] > http://lists.digium.com/mailman/listinfo/asterisk-users > To UNSUBSCRIBE or update options visit: >http://lists.digium.com/mailman/listinfo/asterisk-users > ___ Asterisk-Users mailing list [EMAIL PROTECTED] http://lists.digium.com/mailman/listinfo/asterisk-users To UNSUBSCRIBE or update options visit: http://lists.digium.com/mailman/listinfo/asterisk-users
RE: [Asterisk-Users] Extending E1's over a Satellite link
Actually that should br your round-trip-time. One way latency would be half that. -Original Message- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf Of Bartosz Jozwiak Sent: Wednesday, September 15, 2004 8:56 AM To: Asterisk Users Mailing List - Non-Commercial Discussion Subject: Re: [Asterisk-Users] Extending E1's over a Satellite link We have a satellite line and using IAX. Everything work fine. Latency about 620ms - 680ms Greetings. - Original Message - From: "Arinze Izukanne" <[EMAIL PROTECTED]> To: <[EMAIL PROTECTED]>; "Asterisk Users Mailing List - Non-Commercial Discussion" <[EMAIL PROTECTED]> Sent: Wednesday, September 15, 2004 9:40 AM Subject: Re: [Asterisk-Users] Extending E1's over a Satellite link > Well Julio, in countries where there are no reliable > regional communication backbones with lower return > times, satellites are used and in most cases the > quality is outstanding for a good implementation even > for a double hop. > > I could give you a call over a satellite link, G729 > and latency of up to 650ms. > > > Best regards > > Arinze Izukanne > > > --- Julio Arruda <[EMAIL PROTECTED]> > wrote: > > Tim McKee wrote: > > > Guys: > > > > > > I routinely run multiple phones over our satellite > > system (I'm the VP of > > > Network Services at SDN Global, a satellite > > bandwidth provider located in > > > Charlotte NC, US). > > > > > > Just last week I went to West Palm Beach, FL US > > and turned up a 10 phone > > > emergency call center, complete with ACD queues > > for an insurance company. > > > We were able to run all ten phones (Cisco 7960Gs, > > SIP) on G.729 codecs back > > > to my * server in Charlotte NC US. No special > > settings were required on * > > > or the phones. > > > > > > The satellite system *must* support *REAL* QoS and > > must have jitter < > > > ~100ms. Traditional satellite systems have *lots* > > more jitter than that. > > > The actual latency _doesn't matter_ as long as the > > jitter is steady. We are > > > even doing 'double-hop' phone calls successfully, > > where the latency is > > > double the normal latency. > > > > > > Anyone that wants more detailed info contact me > > off-list. > > > > Out of sheer curisity, the delay itself doesn't make > > the conversation > > 'bad' (meaning, walkie-talkie/roger-and-over-like ?) > > The codec itself should introduce some dozens of ms, > > but the satellite, > > is not at least 300ms one way or something like that > > ? adding the > > codecs, and the jitter buffers and etc..I wonder how > > good/bad is it ? > > ___ > > Asterisk-Users mailing list > > [EMAIL PROTECTED] > > > http://lists.digium.com/mailman/listinfo/asterisk-users > > To UNSUBSCRIBE or update options visit: > > > > > http://lists.digium.com/mailman/listinfo/asterisk-users > > > > > > > > ___ALL-NEW Yahoo! Messenger - all new features - even more fun! http://uk.messenger.yahoo.com > ___ > Asterisk-Users mailing list > [EMAIL PROTECTED] > http://lists.digium.com/mailman/listinfo/asterisk-users > To UNSUBSCRIBE or update options visit: >http://lists.digium.com/mailman/listinfo/asterisk-users > ___ Asterisk-Users mailing list [EMAIL PROTECTED] http://lists.digium.com/mailman/listinfo/asterisk-users To UNSUBSCRIBE or update options visit: http://lists.digium.com/mailman/listinfo/asterisk-users ___ Asterisk-Users mailing list [EMAIL PROTECTED] http://lists.digium.com/mailman/listinfo/asterisk-users To UNSUBSCRIBE or update options visit: http://lists.digium.com/mailman/listinfo/asterisk-users
Re: [Asterisk-Users] Extending E1's over a Satellite link
On Wed, 15 Sep 2004 13:25:35 +0100 (BST), Arinze Izukanne <[EMAIL PROTECTED]> wrote: > Being that its a lot of Bandwidth, I need to compress > the channels to use less bandwidth on the transfer. > TDMoE is ruled out. What can I do with Asterisk to > achieve this aim. Use IAX and the ILBC codec. You could also try IAX trunking to bundle multiple channels into a single IAX stream, but in my experience this requires a fairly good low latency connection, so it's probably a no go in your particular case. Also, if you have jitter and want to use the jitter buffer, IAX trunking is a no go. Still, even without IAX trunking, IAX and ILBC with a QoS of lowbandwidth between the two IAX hosts at each end of the satellite connection should do fine. rgds benjk -- Sunrise Telephone Systems, 9F Shibuya Daikyo Bldg., 1-13-5 Shibuya, Tokyo, Japan. NB: Spam filters in place. Messages unrelated to the * mailing lists may get trashed. ___ Asterisk-Users mailing list [EMAIL PROTECTED] http://lists.digium.com/mailman/listinfo/asterisk-users To UNSUBSCRIBE or update options visit: http://lists.digium.com/mailman/listinfo/asterisk-users
