Re: [Asterisk-Users] Asterisk Codecs [G.729]
[no name provided] wrote: You're right. It's symmetric so it only takes 83Kbits/sec for u-law. IPTraf is confusing me :-) IPTraf is a neat tool but, information it gives should be taken with a grain of salt. If you're looking at "general" statistics, it is going to show you the combined IN+OUT as IPTraf sees it. This IN+OUT is never accurate from what I've seen in my tests. I don't know if it isn't counting encapsulation overhead or what its problem is but it is flat out wrong in almost every instance. Now, for looking at flows through/to a box, it is great. Just don't bank on the bandwidth stats being accurate. I've seen the errors I'm talking about on eth, gige, and ATM OC3 interfaces so, it's not specific to any one interface type. John ___ 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] Asterisk Codecs [G.729]
You're right. It's symmetric so it only takes 83Kbits/sec for u-law. IPTraf is confusing me :-) - Original Message - From: "John Fraizer" <[EMAIL PROTECTED]> To: <[EMAIL PROTECTED]> Sent: Wednesday, March 10, 2004 11:41 AM Subject: Re: [Asterisk-Users] Asterisk Codecs [G.729] > > You need to decide if you're going to measure both sides of the call or not. > ITU standard is 64Kbits/s. That is correct. It is a standard DS0. But, > guess what. That DS0 goes both directions so, "measured bandwidth per call" > is 128Kbits/s using your logic. > > Only "consumer" grade DSL/Cable bandwidth is asymmetric. These "wanna-be" > connections and the accompanying garbage that the sales/marketing monkeys > spew (that the general public laps up as accurate) have done nothing but > cause confusion to people who don't work the network side of the industry. > > [rent on] > (Besides that, it makes their peering ratio so lopsided that there is no way > they're going to get any decent no-settlement bilateral peering and as such, > the price of those connections is going to remain artificially high since > the providers have to PURCHASE transit instead of simply peering.) [rant off] > > When I order an OC3, it's 155Mb/s in BOTH DIRECTIONS. The industry doesn't > say "That's 310Mb/s of bandwidth" because the measure of circuit bandwidth > is by maximum one-way FLOW. You can (on paper) flow 155Mb/s in one > direction on an OC3 (including encapsulation overhead). > > So, if you want to use accepted telco + IP metrics for measuring the flow > (and thus the bandwidth), you look at the GREATER OF THE IN/OUT flow and > that is how much bandwidth is required. > > ULAW = 83Kbits/s including encapsulation overhead. > > John > > > wrote: > > Absolutely agree, > > > > ITU standard is 64Kbits/sec. > > > > VoIP traffic with U-law per channel is 83Kbits/sec. > > > > VoIP traffic with U-law per call is 166Kbits/sec [measuring bandwidth per > > call] > > > > - Original Message - > > From: "Nicolas Bougues" <[EMAIL PROTECTED]> > > To: <[EMAIL PROTECTED]> > > Sent: Wednesday, March 10, 2004 9:55 AM > > Subject: Re: [Asterisk-Users] Asterisk Codecs [G.729] > > > > > > > >>On Wed, Mar 10, 2004 at 09:03:57AM -0800, wrote: > >> > >>>Rich, > >>> > >>>In real world, using real tool, getting real number. You don't expect > > > > to > > > >>>either talk only mode or listen only mode. Per call must have Rx & Tx > > > > for > > > >>>inbound & outbound. > >>> > >> > >>[...] > >> > >> > >>>Engineering rate is per channel but to calculate the bandwidth > > > > consumsion, > > > >>>it must be in realtime full-duplex. > >>> > >> > >>Sure, but in the real world, IP trafic is mostly carried over full > >>duplex links (either serial or switched Ethernet), so you usually > >>consider the trafic in one direction only (provided it's symetrical). > >> > >>If I consider an E1 to be 2 Mbps (2 inbound, 2 outbound, really), and > >>Fast Ethernet to be 100 Mbps (again, 100+100 in full duplex), I shall > >>consider U-law to be 83 kbits/s, not 166. > >> > >>-- > >>Nicolas Bougues > >>Axialys Interactive > >>___ > >>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 > ___ 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] Asterisk Codecs [G.729]
You need to decide if you're going to measure both sides of the call or not. ITU standard is 64Kbits/s. That is correct. It is a standard DS0. But, guess what. That DS0 goes both directions so, "measured bandwidth per call" is 128Kbits/s using your logic. Only "consumer" grade DSL/Cable bandwidth is asymmetric. These "wanna-be" connections and the accompanying garbage that the sales/marketing monkeys spew (that the general public laps up as accurate) have done nothing but cause confusion to people who don't work the network side of the industry. [rent on] (Besides that, it makes their peering ratio so lopsided that there is no way they're going to get any decent no-settlement bilateral peering and as such, the price of those connections is going to remain artificially high since the providers have to PURCHASE transit instead of simply peering.) [rant off] When I order an OC3, it's 155Mb/s in BOTH DIRECTIONS. The industry doesn't say "That's 310Mb/s of bandwidth" because the measure of circuit bandwidth is by maximum one-way FLOW. You can (on paper) flow 155Mb/s in one direction on an OC3 (including encapsulation overhead). So, if you want to use accepted telco + IP metrics for measuring the flow (and thus the bandwidth), you look at the GREATER OF THE IN/OUT flow and that is how much bandwidth is required. ULAW = 83Kbits/s including encapsulation overhead. John wrote: Absolutely agree, ITU standard is 64Kbits/sec. VoIP traffic with U-law per channel is 83Kbits/sec. VoIP traffic with U-law per call is 166Kbits/sec [measuring bandwidth per call] - Original Message - From: "Nicolas Bougues" <[EMAIL PROTECTED]> To: <[EMAIL PROTECTED]> Sent: Wednesday, March 10, 2004 9:55 AM Subject: Re: [Asterisk-Users] Asterisk Codecs [G.729] On Wed, Mar 10, 2004 at 09:03:57AM -0800, wrote: Rich, In real world, using real tool, getting real number. You don't expect to either talk only mode or listen only mode. Per call must have Rx & Tx for inbound & outbound. [...] Engineering rate is per channel but to calculate the bandwidth consumsion, it must be in realtime full-duplex. Sure, but in the real world, IP trafic is mostly carried over full duplex links (either serial or switched Ethernet), so you usually consider the trafic in one direction only (provided it's symetrical). If I consider an E1 to be 2 Mbps (2 inbound, 2 outbound, really), and Fast Ethernet to be 100 Mbps (again, 100+100 in full duplex), I shall consider U-law to be 83 kbits/s, not 166. -- Nicolas Bougues Axialys Interactive ___ 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] Asterisk Codecs [G.729]
Absolutely agree, ITU standard is 64Kbits/sec. VoIP traffic with U-law per channel is 83Kbits/sec. VoIP traffic with U-law per call is 166Kbits/sec [measuring bandwidth per call] - Original Message - From: "Nicolas Bougues" <[EMAIL PROTECTED]> To: <[EMAIL PROTECTED]> Sent: Wednesday, March 10, 2004 9:55 AM Subject: Re: [Asterisk-Users] Asterisk Codecs [G.729] > On Wed, Mar 10, 2004 at 09:03:57AM -0800, wrote: > > Rich, > > > > In real world, using real tool, getting real number. You don't expect to > > either talk only mode or listen only mode. Per call must have Rx & Tx for > > inbound & outbound. > > > > [...] > > > > > Engineering rate is per channel but to calculate the bandwidth consumsion, > > it must be in realtime full-duplex. > > > > Sure, but in the real world, IP trafic is mostly carried over full > duplex links (either serial or switched Ethernet), so you usually > consider the trafic in one direction only (provided it's symetrical). > > If I consider an E1 to be 2 Mbps (2 inbound, 2 outbound, really), and > Fast Ethernet to be 100 Mbps (again, 100+100 in full duplex), I shall > consider U-law to be 83 kbits/s, not 166. > > -- > Nicolas Bougues > Axialys Interactive > ___ > 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] Asterisk Codecs [G.729]
On Wed, Mar 10, 2004 at 09:03:57AM -0800, wrote: > Rich, > > In real world, using real tool, getting real number. You don't expect to > either talk only mode or listen only mode. Per call must have Rx & Tx for > inbound & outbound. > [...] > > Engineering rate is per channel but to calculate the bandwidth consumsion, > it must be in realtime full-duplex. > Sure, but in the real world, IP trafic is mostly carried over full duplex links (either serial or switched Ethernet), so you usually consider the trafic in one direction only (provided it's symetrical). If I consider an E1 to be 2 Mbps (2 inbound, 2 outbound, really), and Fast Ethernet to be 100 Mbps (again, 100+100 in full duplex), I shall consider U-law to be 83 kbits/s, not 166. -- Nicolas Bougues Axialys Interactive ___ 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] Asterisk Codecs [G.729]
Rich, In real world, using real tool, getting real number. You don't expect to either talk only mode or listen only mode. Per call must have Rx & Tx for inbound & outbound. The numbers look more like 83Kbits/sec (thanks Andrew Gillham) in the wiki page or the cisco bandwidth consumsion (thanks Alex Volkow). I'm using IPTraf to monitor the bandwidth. When there is no call, it's 1.8 Kbits/sec. When making a call, it's 166.8 Kbits/sec ULAW codec: Total rates:166.8 kbits/sec 103.6 packets/sec Incoming rates: 83.6 kbits/sec 52.2 packets/sec Outgoing rates:83.2 kbits/sec 51.4 packets/sec Engineering rate is per channel but to calculate the bandwidth consumsion, it must be in realtime full-duplex. - Original Message - From: "Rich Adamson" <[EMAIL PROTECTED]> To: <[EMAIL PROTECTED]> Sent: Wednesday, March 10, 2004 3:41 AM Subject: Re: [Asterisk-Users] Asterisk Codecs [G.729] > All of the numbers he's showing are apparently adding inbound and outbound > traffic together, giving results that are approximately double what is > actually seen on the wire. If he is working in a half-duplex ethernet > environment, those numbers have some meaning; if full-duplex, then cut them > in half for reasonable engineering values. (Also, some _appear_ to be > questionable.) > > > > What is the method you are using to test the bandwidth. Can you give us a outline > > how to do a bit rate measurement on > > asterisk. > > > > > > > ulaw 64 Kbps, sample-based Also known as alaw/ulaw 166kbits/sec > > alaw 64 Kbps, sample-based Also known as alaw/ulaw 167kbits/sec > > gsm 13 Kbps (full rate), 20ms frame size 66kbits/sec > > speex 2.15 to 44.2 Kbps n/a > > iLBC 15Kbps,20ms frame size: 13.3 Kbps, 30ms frame size 57.6kbits/sec > > G.729 8 Kbps, 10ms frame sizelicense > > > > Have anyone test it with G.729? Please let me know. > > > ___ > 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] Asterisk Codecs [G.729]
I posted the results of my real world analysis of codec bandwidth usage on this list a couple of weeks back. Here's the table I put together and an example of calculating bandwidth over ADSL. G.711 over Ethernet = 95 Kbps per channel G.711 over IP/PPP = 86 Kbps per channel G.711 over ADSL/ATM = 108 Kbps per channel G.729 over Ethernet = 39 Kbps per channel G.729 over IP/PPP = 30 Kbps per channel G.729 over ADSL/ATM = 45 Kbps per channel 200 bytes G.711 packet + 8 bytes AAL5 overhead = 208 bytes 208 bytes fit in 5 cells of 48 bytes payload 5 cells are 265 bytes. VoIP over ATM AAL5MUX thus has an overhead of 21.51% VoIP G.711 conversation sends 50 packets per second. This uses 250 cells per second. This causes approximately 10 OAM5 cells to be sent over the duration. The total bitrate is thus (250 + 10) * 53 bytes * 8 bits = 110240 bits/second = 107.66Kbit/s -Original Message- From: Rich Adamson To: [EMAIL PROTECTED] Sent: 10-3-04 12:41 Subject: Re: [Asterisk-Users] Asterisk Codecs [G.729] All of the numbers he's showing are apparently adding inbound and outbound traffic together, giving results that are approximately double what is actually seen on the wire. If he is working in a half-duplex ethernet environment, those numbers have some meaning; if full-duplex, then cut them in half for reasonable engineering values. (Also, some _appear_ to be questionable.) > What is the method you are using to test the bandwidth. Can you give us a outline > how to do a bit rate measurement on > asterisk. > > > ulaw 64 Kbps, sample-based Also known as alaw/ulaw 166kbits/sec > alaw 64 Kbps, sample-based Also known as alaw/ulaw 167kbits/sec > gsm 13 Kbps (full rate), 20ms frame size 66kbits/sec > speex 2.15 to 44.2 Kbps n/a > iLBC 15Kbps,20ms frame size: 13.3 Kbps, 30ms frame size 57.6kbits/sec > G.729 8 Kbps, 10ms frame sizelicense > > Have anyone test it with G.729? Please let me know. ___ 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 * DISCLAIMER * This message and any attachment are confidential and may be privileged or otherwise protected from disclosure and may include proprietary information. If you are not the intended recipient, please telephone or email the sender and delete this message and any attachment from your system. If you are not the intended recipient you must not copy this message or attachment or disclose the contents to any other person ___ 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] Asterisk Codecs [G.729]
i'm looking for a G.729 codec that will work with an IAX client. anyone have any ideas here? alex, enjoyed the article - the codecs are explained at http://www.cisco.com/warp/public/788/voip/codec_complexity.html thx, kaydon From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf Of Alex VolkovSent: Tuesday, March 09, 2004 11:29 PMTo: [EMAIL PROTECTED]Subject: Re: [Asterisk-Users] Asterisk Codecs [G.729] Have a look at the following document. I know it is not *exactly* what you are asking, but it gives you an idea on how the actual bandwidth consumption changes depending on the actual network medium you are utilizing. http://www.cisco.com/warp/public/788/pkt-voice-general/bwidth_consume.html Have fun. Alex. - Original Message - From: To: [EMAIL PROTECTED] Sent: Monday, March 08, 2004 7:29 PM Subject: [Asterisk-Users] Asterisk Codecs [G.729] Hello all, I'm looking for advice for codec that works best for asterisk. Anyone has real testing with all codecs, specially with G.729. I have tested with single call on few codecs that come with asterisk by using IPTraf and the rate as of below: ulaw 64 Kbps, sample-based Also known as alaw/ulaw 166kbits/secalaw 64 Kbps, sample-based Also known as alaw/ulaw 167kbits/secgsm 13 Kbps (full rate), 20ms frame size 66kbits/secspeex 2.15 to 44.2 Kbps n/aiLBC 15Kbps,20ms frame size: 13.3 Kbps, 30ms frame size 57.6kbits/secG.729 8 Kbps, 10ms frame sizelicense Have anyone test it with G.729? Please let me know. Thanks.
Re: [Asterisk-Users] Asterisk Codecs [G.729]
All of the numbers he's showing are apparently adding inbound and outbound traffic together, giving results that are approximately double what is actually seen on the wire. If he is working in a half-duplex ethernet environment, those numbers have some meaning; if full-duplex, then cut them in half for reasonable engineering values. (Also, some _appear_ to be questionable.) > What is the method you are using to test the bandwidth. Can you give us a outline > how to do a bit rate measurement on > asterisk. > > > ulaw 64 Kbps, sample-based Also known as alaw/ulaw 166kbits/sec > alaw 64 Kbps, sample-based Also known as alaw/ulaw 167kbits/sec > gsm 13 Kbps (full rate), 20ms frame size 66kbits/sec > speex 2.15 to 44.2 Kbps n/a > iLBC 15Kbps,20ms frame size: 13.3 Kbps, 30ms frame size 57.6kbits/sec > G.729 8 Kbps, 10ms frame sizelicense > > Have anyone test it with G.729? Please let me know. ___ 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] Asterisk Codecs [G.729]
Have a look at the following document. I know it is not *exactly* what you are asking, but it gives you an idea on how the actual bandwidth consumption changes depending on the actual network medium you are utilizing. http://www.cisco.com/warp/public/788/pkt-voice-general/bwidth_consume.html Have fun. Alex. - Original Message - From: To: [EMAIL PROTECTED] Sent: Monday, March 08, 2004 7:29 PM Subject: [Asterisk-Users] Asterisk Codecs [G.729] Hello all, I'm looking for advice for codec that works best for asterisk. Anyone has real testing with all codecs, specially with G.729. I have tested with single call on few codecs that come with asterisk by using IPTraf and the rate as of below: ulaw 64 Kbps, sample-based Also known as alaw/ulaw 166kbits/secalaw 64 Kbps, sample-based Also known as alaw/ulaw 167kbits/secgsm 13 Kbps (full rate), 20ms frame size 66kbits/secspeex 2.15 to 44.2 Kbps n/aiLBC 15Kbps,20ms frame size: 13.3 Kbps, 30ms frame size 57.6kbits/secG.729 8 Kbps, 10ms frame sizelicense Have anyone test it with G.729? Please let me know. Thanks.
Re: [Asterisk-Users] Asterisk Codecs [G.729]
What is the method you are using to test the bandwidth. Can you give us a outline how to do a bit rate measurement on asterisk. At 04:29 PM 3/8/2004 -0800, you wrote: Hello all, I'm looking for advice for codec that works best for asterisk. Anyone has real testing with all codecs, specially with G.729. I have tested with single call on few codecs that come with asterisk by using IPTraf and the rate as of below: ulaw 64 Kbps, sample-based Also known as alaw/ulaw 166kbits/sec alaw 64 Kbps, sample-based Also known as alaw/ulaw 167kbits/sec gsm 13 Kbps (full rate), 20ms frame size 66kbits/sec speex 2.15 to 44.2 Kbps n/a iLBC 15Kbps,20ms frame size: 13.3 Kbps, 30ms frame size 57.6kbits/sec G.729 8 Kbps, 10ms frame size license Have anyone test it with G.729? Please let me know. Thanks. ___ 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] Asterisk Codecs [G.729]
It's full-duplex for both inbound & outbound Total rates:166.8 kbits/sec 103.6 packets/sec Incoming rates: 83.6 kbits/sec 52.2 packets/sec Outgoing rates:83.2 kbits/sec 51.4 packets/sec - Original Message - From: "Andrew Gillham" <[EMAIL PROTECTED]> To: <[EMAIL PROTECTED]> Sent: Tuesday, March 09, 2004 2:45 PM Subject: Re: [Asterisk-Users] Asterisk Codecs [G.729] > Andrew Gillham wrote: > > > wrote: > > > >> Hello all, > >> > >> I'm looking for advice for codec that works best for asterisk. > >> Anyone has real testing with all codecs, specially with G.729. I > >> have tested with single call on few codecs that come with asterisk by > >> using IPTraf and the rate as of below: > >> > >> ulaw 64 Kbps, sample-based Also known as alaw/ulaw 166kbits/sec > >> alaw 64 Kbps, sample-based Also known as alaw/ulaw 167kbits/sec > >> gsm 13 Kbps (full rate), 20ms frame size 66kbits/sec > >> speex 2.15 to 44.2 Kbps n/a > >> iLBC 15Kbps,20ms frame size: 13.3 Kbps, 30ms frame size 57.6kbits/sec > >> G.729 8 Kbps, 10ms frame sizelicense > >> > >> Have anyone test it with G.729? Please let me know. > >> > >> Thanks. > >> > > > > > > Are some of these numbers for the full-duplex traffic? > > Ok, my question doesn't even seem that clear to me. :-) > > What I mean, is that the G.711 numbers for example look like both > directions *combined* so the actual rate would be more like 83Kbit/s. > (much like listed on the wiki page) > > So for G.711 a/ulaw, gsm, iLBC etc I was wondering if that is a single > direction, or the combination of both directions? > > -Andrew > > ___ > 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] Asterisk Codecs [G.729]
Andrew Gillham wrote: wrote: Hello all, I'm looking for advice for codec that works best for asterisk. Anyone has real testing with all codecs, specially with G.729. I have tested with single call on few codecs that come with asterisk by using IPTraf and the rate as of below: ulaw 64 Kbps, sample-based Also known as alaw/ulaw 166kbits/sec alaw 64 Kbps, sample-based Also known as alaw/ulaw 167kbits/sec gsm 13 Kbps (full rate), 20ms frame size 66kbits/sec speex 2.15 to 44.2 Kbps n/a iLBC 15Kbps,20ms frame size: 13.3 Kbps, 30ms frame size 57.6kbits/sec G.729 8 Kbps, 10ms frame sizelicense Have anyone test it with G.729? Please let me know. Thanks. Are some of these numbers for the full-duplex traffic? Ok, my question doesn't even seem that clear to me. :-) What I mean, is that the G.711 numbers for example look like both directions *combined* so the actual rate would be more like 83Kbit/s. (much like listed on the wiki page) So for G.711 a/ulaw, gsm, iLBC etc I was wondering if that is a single direction, or the combination of both directions? -Andrew ___ 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] Asterisk Codecs [G.729]
wrote: Hello all, I'm looking for advice for codec that works best for asterisk. Anyone has real testing with all codecs, specially with G.729. I have tested with single call on few codecs that come with asterisk by using IPTraf and the rate as of below: ulaw 64 Kbps, sample-based Also known as alaw/ulaw 166kbits/sec alaw 64 Kbps, sample-based Also known as alaw/ulaw 167kbits/sec gsm 13 Kbps (full rate), 20ms frame size 66kbits/sec speex 2.15 to 44.2 Kbps n/a iLBC 15Kbps,20ms frame size: 13.3 Kbps, 30ms frame size 57.6kbits/sec G.729 8 Kbps, 10ms frame sizelicense Have anyone test it with G.729? Please let me know. Thanks. Are some of these numbers for the full-duplex traffic? -Andrew ___ 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] Asterisk Codecs [G.729]
On Tue, 2004-03-09 at 00:29, wrote: > I'm looking for advice for codec that works best for asterisk. Anyone > has real testing with all codecs, specially with G.729. I have tested > with single call on few codecs that come with asterisk by using IPTraf > and the rate as of below: > ulaw 64 Kbps, sample-based Also known as alaw/ulaw 166kbits/sec > alaw 64 Kbps, sample-based Also known as alaw/ulaw 167kbits/sec > gsm 13 Kbps (full rate), 20ms frame size 66kbits/sec > speex 2.15 to 44.2 Kbps n/a > iLBC 15Kbps,20ms frame size: 13.3 Kbps, 30ms frame size 57.6kbits/sec > G.729 8 Kbps, 10ms frame sizelicense Single call using which protocol? I would like to know more about your methodology... > Have anyone test it with G.729? Please let me know. John Todd has tested IAX2 in 'trunking' mode with a variety of codecs , including G.729: http://voip-info.org/wiki-Asterisk+bandwidth+iax2 Note that your results show Speex as better than iLBC for a single call, which differs from John Todd's... F ___ 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] Asterisk Codecs [G.729]
Hello all, I'm looking for advice for codec that works best for asterisk. Anyone has real testing with all codecs, specially with G.729. I have tested with single call on few codecs that come with asterisk by using IPTraf and the rate as of below: ulaw 64 Kbps, sample-based Also known as alaw/ulaw 166kbits/secalaw 64 Kbps, sample-based Also known as alaw/ulaw 167kbits/secgsm 13 Kbps (full rate), 20ms frame size 66kbits/secspeex 2.15 to 44.2 Kbps n/aiLBC 15Kbps,20ms frame size: 13.3 Kbps, 30ms frame size 57.6kbits/secG.729 8 Kbps, 10ms frame sizelicense Have anyone test it with G.729? Please let me know. Thanks.
