We have 7 companies across the globe and we have Avaya SCN through VPN connectivity. We have users who are getting the message INVALID BUTTONS when they use different avaya phoneset model from one office to another office. The only thing we can do is to delete the EXT number and recreate it...
I need help from scratch to configure SIP TRUNKING. We have already purchased SIP Licenses and network provider provided the IP addresses. We have 10 phone numbers dedicated to MAIN number for outgoing and incoming calls.
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