OXE - Public SIp Incoming not workin

[morio]

Dear Friends,
Strange, out going sip calls are fine but for incoming oxe is replying with 403.
sip trace is attached. please adive and thanks in advance...

[frank]

Your authentication setup is incorrect on the external gateway



Thu Mar 14 00:46:45 2024 [CGwMngData::isExternalGatewayLinked] +966509345978@fmc.stc.com.sa NOT found in the dictionnary.
Thu Mar 14 00:46:45 2024 [isDomainFromExtGw] Host from request is : fmc.stc.com.sa.
Thu Mar 14 00:46:45 2024 [isDomainFromExtGw] User from request is : +966509345978
1710366405 -> Thu Mar 14 00:46:45 2024 116d [CProxyCall::controlAuthentication] extGw after=-1
Thu Mar 14 00:46:45 2024 [CGwMngData::isAuthenticationRequiredForThisClient] +966509345978@fmc.stc.com.sa .
Thu Mar 14 00:46:45 2024 [CGwMngData::isAuthenticationRequiredForThisClient] -1 need auth=0.
Thu Mar 14 00:46:45 2024 [CGwMngData::isAuthenticationRequiredForThisClient] external gateway -1.
Thu Mar 14 00:46:45 2024 CGwMngData::isAuthenticationRequiredForThisClient: gateway=-1
Thu Mar 14 00:46:45 2024 CGwMngData::isAuthenticationRequiredForThisClient: FALSE after call to Global get mcdu gateway=-1 => -1 or -2
Thu Mar 14 00:46:45 2024 [CGwMngData::isAuthenticationMandatory] Yes
Thu Mar 14 00:46:45 2024 [CGwMngData::isAuthenticationRequiredForThisClient] ext gw=-2.
Thu Mar 14 00:46:45 2024 116d [CProxyCall::controlAuthentication] FORBIDDEN
Thu Mar 14 00:46:45 2024 116d [CCall::checkAuthentication] AUTHENT=0
Thu Mar 14 00:46:45 2024 116d [CCall::checkAuthentication] NOT_FOUND
Thu Mar 14 00:46:45 2024 116d [CCall::checkAuthentication] iRetValue=-5
Thu Mar 14 00:46:45 2024 116d [CCall::receiveRequest] extGw=-2.
Thu Mar 14 00:46:45 2024 116d [CCall::receiveRequest] Authentication Forbidden
Thu Mar 14 00:46:45 2024 116d [CCall::makeGenericResponse] 403