I have CM6.1 system and all phones can access corperate directories except 7912 phones. When press directory button to access corperate directory, get message says "service unavilable". If anyone knows how to trouble shooting this, please help.
Thanks for your into. I already have IP address in URL field. This problem only apply to 7912 phones, all other phones on CM are fine. I think there must be some special configuretion for 7912 to make this work, but I just not find any docu or instruction yet.
SIP traces provide key information in troubleshooting SIP Trunks, SIP
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