hi Dear all
i'm trying to add avaya ip phone J129 in IPO v2 500 version 9.1.3
in monitoring i have this message below
55089070mS SIP Tx: TCP 192.168.90.2:5060 -> 192.168.20.16:42895
SIP/2.0 403 Forbidden
Via: SIP/2.0/TCP...
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