Hey guys - So our J179 SIP phones will register to our avaya ip office locally on our private lan just fine if we use the FQDN of the IP Office system in the SIP Domain field on the J179. However, externally when we try to register thru our SBCE (using the external IP of the Avaya SBCE as the proxy) it will not register using the fqdn & we are having to put the external IP of the sbce in the sip domain field. I have already verified that the fqdn is properly resolving to the public IP address of the sbce - yet we still have to enter the actual IP for it to work rather than the fqdn? Any idea's or suggestions? Thanks,
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