R: [LARTC] time window in CBQ
Title: R: [LARTC] time window in CBQ -Messaggio originale- Da: Steve Wright [mailto:[EMAIL PROTECTED]] Inviato: venerdì 5 settembre 2003 11.31 A: Andreani Luca Oggetto: Re: [LARTC] time window in CBQ On Fri, 2003-09-05 at 19:22, Andreani Luca wrote: Dear list, I have two linux boxes acting as VoIP Gateway in the following configuration: IP Phone --+ +--+ +--+ + IP Phone |---eth0-| Linux BOX1 |-hdlc0--hdlc0-| Linux BOX2 |-hdlc0---| PC - -+ +--+ +-+ +--- PC The hdlc link is 64 kbps. is 64kbit/sec enough for VoIP ? I would have thought not.. but I do not have VoIP... /steve
Re: R: [LARTC] time window in CBQ
On Fri, 5 Sep 2003, Andreani Luca wrote: is 64kbit/sec enough for VoIP ? I would have thought not.. but I do not have VoIP... Steve, what voip codec do you use? If you can select, use G723 (6.3 kbit/s) /steve --- Catalin(ux) BOIE [EMAIL PROTECTED] ___ LARTC mailing list / [EMAIL PROTECTED] http://mailman.ds9a.nl/mailman/listinfo/lartc HOWTO: http://lartc.org/
Re: R: [LARTC] time window in CBQ
Hi Steve, is 64kbit/sec enough for VoIP ? I would have thought not.. but I do not have VoIP... Steve, what voip codec do you use? If you can select, use G723 (6.3 kbit/s) yep, 64kBit is fine with GnomeMeeting. You should use Speex8k though, as there's a huge protocol overhead that needs to be added to that number of x.y kBit/s.. (many small packets) Empirically Speex8k works fine and MS-GSM might also do. The G.723 does require a hardware extension and is not available with pure software. Feel free to search the GnomeMeeting archives for details on configurations. ;) -- Best regards, Kilian signature.asc Description: Dies ist ein digital signierter Nachrichtenteil
Re: R: [LARTC] time window in CBQ
On Fri, 2003-09-05 at 22:03, Catalin BOIE wrote: On Fri, 5 Sep 2003, Andreani Luca wrote: is 64kbit/sec enough for VoIP ? I would have thought not.. but I do not have VoIP... Steve, what voip codec do you use? If you can select, use G723 (6.3 kbit/s) ahh, but I do not have VoIP. I am planning still. /sw ___ LARTC mailing list / [EMAIL PROTECTED] http://mailman.ds9a.nl/mailman/listinfo/lartc HOWTO: http://lartc.org/
Re: R: [LARTC] time window in CBQ
On Fri, 2003-09-05 at 21:54, Andreani Luca wrote: with codec G.729 the bandidth is 8kbps, plus the overhead it reachs about 27 kbps. I can make two calls on that link, and I made it... thanks for that. I am surprised. /steve ___ LARTC mailing list / [EMAIL PROTECTED] http://mailman.ds9a.nl/mailman/listinfo/lartc HOWTO: http://lartc.org/
Re: R: [LARTC] time window in CBQ
I must recommend against using G723 unless you are in a very bandwidth starved but high reliability situation. VOIP is extremely time sensitive, and the latency involved in compression greatly reduces your margin for error. G711 uses more bandwidth (64k per call is a reasonable figure, but it depends on packetization), but will be considerably more forgiving to jitter. On Friday 05 September 2003 05:03 am, Catalin BOIE wrote: On Fri, 5 Sep 2003, Andreani Luca wrote: is 64kbit/sec enough for VoIP ? I would have thought not.. but I do not have VoIP... Steve, what voip codec do you use? If you can select, use G723 (6.3 kbit/s) /steve --- Catalin(ux) BOIE [EMAIL PROTECTED] ___ LARTC mailing list / [EMAIL PROTECTED] http://mailman.ds9a.nl/mailman/listinfo/lartc HOWTO: http://lartc.org/ ___ LARTC mailing list / [EMAIL PROTECTED] http://mailman.ds9a.nl/mailman/listinfo/lartc HOWTO: http://lartc.org/
R: R: [LARTC] time window in CBQ
Title: R: R: [LARTC] time window in CBQ Ok, but what about my iproute/tc script for VoiP priorization? Any suggestion? -Messaggio originale- Da: John McCain [mailto:[EMAIL PROTECTED]] Inviato: venerdì 5 settembre 2003 15.44 A: [EMAIL PROTECTED] Oggetto: Re: R: [LARTC] time window in CBQ I must recommend against using G723 unless you are in a very bandwidth starved but high reliability situation. VOIP is extremely time sensitive, and the latency involved in compression greatly reduces your margin for error. G711 uses more bandwidth (64k per call is a reasonable figure, but it depends on packetization), but will be considerably more forgiving to jitter. On Friday 05 September 2003 05:03 am, Catalin BOIE wrote: On Fri, 5 Sep 2003, Andreani Luca wrote: is 64kbit/sec enough for VoIP ? I would have thought not.. but I do not have VoIP... Steve, what voip codec do you use? If you can select, use G723 (6.3 kbit/s) /steve --- Catalin(ux) BOIE [EMAIL PROTECTED] ___ LARTC mailing list / [EMAIL PROTECTED] http://mailman.ds9a.nl/mailman/listinfo/lartc HOWTO: http://lartc.org/ ___ LARTC mailing list / [EMAIL PROTECTED] http://mailman.ds9a.nl/mailman/listinfo/lartc HOWTO: http://lartc.org/
