It depends on the type of sip end point, and how long it takes to respond to a SIP event.
For example if I connect a Cisco 7960 IP phone to my Asterisk server over the LAN, I always see registration times of over 100ms. But if I connect X-Lite I get registration times of under 10ms. Asterisk connected as a SIP client, under 2ms. The higher latency with the Cisco's don't seem to effect performance at all. -- Brad > To: asterisk-users@lists.digium.com > From: seandar...@gmail.com > Date: Sat, 23 Oct 2010 12:31:58 -0400 > Subject: [asterisk-users] Why such high latency on internal lan? > > My internal lan is small, 100mb, all wired. aastra phones. > > sip show peers > ....... > 142/... 10.10.10.42 D A 5060 OK (136 ms) > 144/... 10.10.10.44 D A 5060 OK (138 ms) > 145/... 10.10.10.45 D A 5060 OK (133 ms) > > But pings are < 1ms: > > ping 10.10.10.42 > ........ > rtt min/avg/max/mdev = 0.479/0.483/0.497/0.021 ms > > Why are the sip latencies so high? And is it a problem? And if so, how > do I fix it? > > FWIW, latencies to outside providers over nat are close to ping: > > jnctn/.... 5060 OK (7 ms) > teliax/... N 5060 OK (7 ms) > > ping <teliax ip address> > ........ > rtt min/avg/max/mdev = 3.471/4.120/4.466/0.288 ms > > > sean > > > > > > > > -- > _____________________________________________________________________ > -- Bandwidth and Colocation Provided by http://www.api-digital.com -- > New to Asterisk? Join us for a live introductory webinar every Thurs: > http://www.asterisk.org/hello > > asterisk-users mailing list > To UNSUBSCRIBE or update options visit: > http://lists.digium.com/mailman/listinfo/asterisk-users
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