aganno

Hi, I have a Definity G3 w/ CM2.0. I have set up at work a Linksys RV042 Router/VPN and one at an off site location. The tunnel is there and working and the 4620 IP phone registers fine. I can make and recieve the first call and everything is great. But after the initial call, I get no dial tone but am able to dial and I can hear the other end but they cant hear me. If I hard reboot the phone, it works the first time and then reverts back to no dial tone and endpoint cant hear me. Any and all help is greatly appreciated.

Thanks in advance.

sjforcum

Sounds like the TCP isn't setup on your VPN...so the packets are getting blocked.

SJF

PBXtech.info

 

oozenoz

If that were the case the phone would not work at all.

VPN tunnels are nothing more than encapsulated, routed traffic - the broadband equivalent of a leased line, if it makes it easier to grasp. The gateways utilize strong encryption to prevent the content of the packets from being read by standard sniffing tools, but they don't arbitrarily block or drop packets (unless they are defective).

Is the problem with a single phone or all phones? Have you tried testing the same phone from within the same LAN segment as the server?

Do you have a PC on the network where the phone is? Set up an extended ping to the IP address the phone is connecting to and watch for drops. If you don't lose packets, or other applications are running ok across the tunnel, you can pretty much rule out it being the network.

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- calvin