As CarrierAccess states, there can be potential mismatch regarding the TDM signaling required to terminate the voice channels onto the FXS cards. I'm not sure I understand this fully. He also says "Although E1 still remains as another option, given a compatible signaling pattern". Since I'm a real newbie in this area, I don't know what the signaling pattern would be?
Of course I could ask them all this questions, but it can take a long time until answer arrive. One thing is the time difference. And now, the seller has gone on a trip for the weekend, and won't be back until Monday. Which will become tuesday in Sweden. And my project is really urgent! Thanks for helping me out! ----- Original Message ----- From: "Peter Svensson" <[EMAIL PROTECTED]> To: "Asterisk Users Mailing List - Non-Commercial Discussion" <[email protected]> Sent: Friday, January 21, 2005 2:42 PM Subject: Re: [Asterisk-Users] Adit 600 as VoIP router (MGCP) and Asterisk > On Fri, 21 Jan 2005, Daniel Nystr�m wrote: > > > Do you think it's hearable? All communication will be on a dedicated > > Fast Ethernet link (just a cross-over cable). And it will still use aLaw > > codec (same as Euro ISDN afaik). > > > Since E1 = 2048Kbps and FastEth = 100Mbps, I concidered it fast enough > > to not make any latency. It seems like MGCP also can use UDP. In that > > case, there won't be any retransmission or anything. > > What you will notcie is the packetization delay of 20ms (or 30 depening on > the codecs) which yeilds 40-60ms round trip time possibly combined with > jitter buffers. The transmission time, once packetized is usually not very > significant, it is the packetization and possible user level queues that > mess up the latency. > > The delay on almost any voip technology can transform a nice sidetone to a > nasty echo. This is one of many reasons telecom people strive to minimize > latency. > > > Do you have any experiences using MGCP of any kind? > > Unfortunatly not. > > Peter > > > > _______________________________________________ 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
