Calls dropping across SCN 1

[phoneuser72]

I have a scn with 412 4.1.12 and IP500 4.1.12 . I am at the site were the 500 is located . calls that start in the 500 drop at 1:42. The calls that go out over the ip trunks and use the 412 pri or ext to ext over the ip trunks. I have a ip phone that is registered to the 412 at the same site never drops a call.The 500 has 8 voice networking lic and advance scn lic. any ideas?

Chris

 

[brainey1]

How many channels do you have it configured for? If 8, then you will also need 4 VCM license on the 500.

 

[phoneuser72]

I have 16 vcm lic

 

[tlpeter]

What connection do you have ?
Maybe you run out of bandwith


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[Notsetinstone]

Are the sites connected via vpn? What VPN routers do you have?

http://www.nu-tel.com

 

[phoneuser72]

they are cisco routers the one at the 500 end is a cisco ASA 5505 and the 412 end is a cisco ???

 

[whiteEEnerd]

If they are all dropping at the exact same time, then it is a VPN issue. I had a similar problem where calls would drop at the 30 second mark. I forget what the exact issue was, but the topic is in this forum somewhere. Try searching for something like "cisco vpn SCN".

 

[DavidCT]

Check all VPN devices and make sure H323 transformations (H323 Fixup) are turned OFF/DISABLED.

 

[phoneuser72]

Thanks to all that replied to this. We turned off the H323 transformers and that did it. Thanks for the support!!