> My ADSL connection speed is 512Kb up and 128Kb down. > > When making calls from Asterisk to IAX and back to the Asterisk, the > sound is choppy and 20% of voice messages was lost. What is the > production bandwidth requirement per internet call. I understand there > is no guarantee of QoS but at least a benchmark to follow.Dave, Running 768/128 dsl here, and iax calls are fine. Two or three is about the limit if absolutely nothing else is burning bandwidth. As a reference point, a C7960 sip call across the same dsl circuit burns about ~80kb and provides a very good quality call. Iax calls (with gsm) uses considerably less bandwidth. Rich
Kannaiyan Natesan
2004-Jan-20 16:45 UTC
[Asterisk-Users] Brandwidth for making internet calls
> I was looking for this info and thought I'd post it here for all. > > Codec BR NEB > G.711 64 Kbps 87.2 Kbps > G.729 8 Kbps 31.2 Kbps > G.723.1 6.4 Kbps 21.9 Kbps > G.723.1 5.3 Kbps 20.8 Kbps > G.726 32 Kbps 55.2 Kbps > G.726 24 Kbps 47.2 Kbps > G.728 16 Kbps 31.5 Kbps > > BR = Bit rate > NEB = Nominal Ethernet Bandwidth > ( from http://www.terracall.com/FAQs.asp ) > > Rgds., > > F. Rodriguez >----- Original Message ----- From: "dkwok" <dkwok@iware.com.au> To: <asterisk-users@lists.digium.com> Sent: Wednesday, January 21, 2004 6:59 AM Subject: [Asterisk-Users] Brandwidth for making internet calls> My ADSL connection speed is 512Kb up and 128Kb down. > > When making calls from Asterisk to IAX and back to the Asterisk, the > sound is choppy and 20% of voice messages was lost. What is the > production bandwidth requirement per internet call. I understand there > is no guarantee of QoS but at least a benchmark to follow. > > -- > David Kwok > > Iaxtel/FWD # 17001813482 >
My ADSL connection speed is 512Kb up and 128Kb down. When making calls from Asterisk to IAX and back to the Asterisk, the sound is choppy and 20% of voice messages was lost. What is the production bandwidth requirement per internet call. I understand there is no guarantee of QoS but at least a benchmark to follow. -- David Kwok Iaxtel/FWD # 17001813482 -------------- next part -------------- A non-text attachment was scrubbed... Name: smime.p7s Type: application/x-pkcs7-signature Size: 1878 bytes Desc: S/MIME Cryptographic Signature Url : http://lists.digium.com/pipermail/asterisk-users/attachments/20040120/7f25a414/smime.bin