Hi Guys hoping some one can help with this.
I have a customers IP Office 500 V4.1 installed the sip trunk licences and programmed all test ok for inbound calls but on out bound calls I get destination in compatible on the phone. I have attached captured sip header from the ITSP below, the...
Hi I am hoping some one can answer this for me as avaya are refusing to help! They know the answer but won't give it to me.
I have one BCM50 and a BCM400 linked via h323 trunks through a VPN.
I can call from one site to another internally with no problems, the BCM50 side currently has no PSTN...
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