Re: [asterisk-users] QOS for outgoing SIP calls
Chris Mason wrote: > QOS can only be on outgoing, you can't set the priority of a packet > after you receive it. The only other solution would be the cooperation > of the ISP to provide QOS upstream of you. Good luck. QOS is probably not the most precise term as it's normally associated with RSVP, MPLS, packet headers, etc. But you can, in Netscreens at least, define a Guaranteed Bandwidth. We do this for SIP/IAX IPs, in both outgoing and incoming policies, and it works both ways. Audio quality is good and there are no "chan_sip.c: Peer is now (UNREACHABLE|Lagged)" messages even during long DVD or Bitorrent xfers. The reason it works outbound is a no-brainer, but inbound bandwidth is also effectively guaranteed. Sure there's no way to control external devices that ignore ICMP source-quench or break TCP congestion control but those flows are typically limited to nefarious sources which would not be responsive to other types of QOS anyhow (BGP being one potential exception). Roger Marquis ___ -- Bandwidth and Colocation Provided by http://www.api-digital.com -- asterisk-users mailing list To UNSUBSCRIBE or update options visit: http://lists.digium.com/mailman/listinfo/asterisk-users
Re: [asterisk-users] QOS for outgoing SIP calls
Simon wrote: > Hi There, > > We have our Asterisk box using a external SIP provider for outgoing > calls over our DSL line. This seems to be going well... But i do have > the ability to set some QOS ports in our linksystem DSL router... Its > faily basic, so im wondering if it will help at all... > > We can specify High, Med, Low settings for: FTP, HTTP, Telnet, SMTP > and POP3. Plus we have the ability to specify up to 3 ports for the > same settings. > > Is this worth doing? If so, what ports should i specifiy? > > Simon > > ___ > -- Bandwidth and Colocation Provided by http://www.api-digital.com -- > > asterisk-users mailing list > To UNSUBSCRIBE or update options visit: >http://lists.digium.com/mailman/listinfo/asterisk-users If you can, try giving the highest priority to the UDP protocol or the provider IP address. Sam ___ -- Bandwidth and Colocation Provided by http://www.api-digital.com -- asterisk-users mailing list To UNSUBSCRIBE or update options visit: http://lists.digium.com/mailman/listinfo/asterisk-users
Re: [asterisk-users] QOS for outgoing SIP calls
On Wed, Apr 16, 2008 at 11:49 PM, Simon <[EMAIL PROTECTED]> wrote: > Hi There, > > We have our Asterisk box using a external SIP provider for outgoing > calls over our DSL line. This seems to be going well... But i do have > the ability to set some QOS ports in our linksystem DSL router... Its > faily basic, so im wondering if it will help at all... > > We can specify High, Med, Low settings for: FTP, HTTP, Telnet, SMTP > and POP3. Plus we have the ability to specify up to 3 ports for the > same settings. > > Is this worth doing? If so, what ports should i specifiy? > Hi Simon, You won't be able to get much use of your router's QoS if it can only set it via port number. By default Asterisk will select a UDP port somewhere in the range of 10,000 to 20,000 to carry the RTP. The port selected for the RTP will be different at your end and at your providers end which means you would need two QoS port rules per call. You can change the port range your Asterisk server uses for RTP in rtp.conf but there's probably not a lot of point given you can't prioritise a big enough range with only 3 rules available. To be of any practical use for SIP calls you really need to be able to set QoS by IP address. Regards, Greyman. ___ -- Bandwidth and Colocation Provided by http://www.api-digital.com -- asterisk-users mailing list To UNSUBSCRIBE or update options visit: http://lists.digium.com/mailman/listinfo/asterisk-users
[asterisk-users] QOS for outgoing SIP calls
Hi There, We have our Asterisk box using a external SIP provider for outgoing calls over our DSL line. This seems to be going well... But i do have the ability to set some QOS ports in our linksystem DSL router... Its faily basic, so im wondering if it will help at all... We can specify High, Med, Low settings for: FTP, HTTP, Telnet, SMTP and POP3. Plus we have the ability to specify up to 3 ports for the same settings. Is this worth doing? If so, what ports should i specifiy? Simon ___ -- Bandwidth and Colocation Provided by http://www.api-digital.com -- asterisk-users mailing list To UNSUBSCRIBE or update options visit: http://lists.digium.com/mailman/listinfo/asterisk-users
