sundance-communications.com/forum Forums TDM Business Telephone Systems Samsung Telephones & Systems SIP one way speech after 5min

Hi Guys

I installed a 7200 last week
MCP 2.69
MGI 1.19

It only has SIP trunks but the customer is now complaining that after 5 min they stop hearing so the press transfer twice and the i work for the rest of the conversation

I check it out but cant find the problem, I asked samsung help-desk they said I was a router problem but I don't know what to do next as the router already has port fwd 5060 to MCP.

Can anyone help

Hi

Check your codecs.
As far as i know samsung only supports a-law.
Make sure that a-law is allowed on the client side as well as the server side.
Open port 5061 as well.

First of all you must upgrade you system to v4.14 and
MGI16 to v1.20

Hi

I have the MCP in a DMZ but I still have the problem as for the codec can you pm me with the MMC.

I can put 4.14 because the Indial don't work.

But even if I have 4.14 it still has the same problem.

the problem seams to be the router drops the re-invite packet after 5min and because the VSP (Engin) doesn't receive anything back it drops the call.

I was reading on the net and a lot of people with that VSP have the same problem

https://forums.whirlpool.net.au/index.cfm?a=wiki&tag=VoIP_engin_5m32