Unnable to make outgoing call to GSM IP gateway with uc-560
I have uc-560 FXO k9 with IOS uc500-advipservicesk9-mz.150-1.XA and CUE 7.1.3
I have ip phone SPA502G and SPA504G
I have a IP GSM gateway for incoming and outgoing GSM call
I configured the uc-560(192.168.20.1) and the GSM gateway(192.168.20.3) and everything gave worked fine during 1 month
Then I activated firewall, then 4 day after the outgoing and incoming GSM call have problem : it is not working
I deactivated the firewall but the problem remain the same local call between cisco IP phone are ok , outgoing and incoming call on the 4 FXO line are OK, but outgoing and incoming GSM call are not working
I uploaded configured that I saved 3 week ago when everything was fine but the problem remain the same
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