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Hello,I try to make G.729 calls with Nortel Softphone over VPN and firewall and it's curious but voice drops after a few seconds while signalisation still good. After 1 minute with no voice the softphone application crashes. If I use G.711 codec I ha...
Hi,I'm using a Cisco VPN concentrator 3000 and when two laptops are connected out of the office with VPN, they can't speak to each other with their IP Softphone. Signalisation is good because we can see the flashing key. But media stream is lost...Th...
The problem is that on the PC you have only one harware NIC for two kinds of trafic. You cannot tag your softphone's voice so my point of view is it's impossible to separate data and voice.As said, span the data Vlan but you'll generate huge trafic f...
Problem solved.As said previously it's not a FW problem.Problem with the Cisco VPN client v 4.8 using AES 128 bits encryption.No more problem with version 5.0
In fact it seems that this is not a PIX515 problem because it works in this configuration :Softphone <---> PIX515 <---> IPBX I'm going to post in the VPN forum...
