Hello,I'm encountering an voice call problem between C2801 and Nortel PABX.All the outgoing call failed when it's on channel 16 from 0.Is there something I miss out in configuration.I tried both qsig and net5 switch type in cisco router.Please see th...

Dear All,I'm unfamiliar and newbie to the VOIP system and need to setup small system for branch office.I've just dug out a few related post from here (thank you netpro) and would like to ask a few question.Here's the most similar example for my case....

Hello Guys,I need your help and advice.We are about to deploy a SRST system on a remote site using 2851 router.There'll be 3x3560 PoE switches and two VG224 using as a distribution device to73 ip phones, 35 analog phones , 1 fax machine and 1 confere...