Site to Site Calls not working

[VITechguy]

I have had no problems making site to site calls, all of a sudden to day I am getting errors. Take a look.
12/11/14 11:12:44 AM-513ms Call Ref = 109, Originator State = Dialling, Type = User, Destination State = Seized, Type = Target List
12/11/14 11:12:44 AM-530ms Call Ref = 109, Originator State = Dialling, Type = User, Destination State = Clearing, Type = Trunk
12/11/14 11:12:44 AM-530ms Call Ref = 109, Disconnect from Destination End.

I dont know how to resolve this issue my connection is over a VPN using asa5510. Like I said I have had no issues. Thanks if you can help. Also on the other when they dial they are getting" Call declined unobtainable".

 

[smokinjoe2938]

we need more info to trouble shoot this, also check system status under trunks and most likely is out of service

 

[VITechguy]

Thanks, its working just found out that one of the techs enabled a feature on our filter that had caused this problem.

 

[g18c]

Glad you fixed it... I've had my fair share or SCN issues. Things I have seen are:

H323 firewall helpers
Media path routing issues
Required firewall ports not open
Internal to Internal addresses being NATTed

Network can appear to be fine, especially with NAT which had me head-scratching for a couple of hours!