User manual

8.4.2 Outgoing Calls via VoIP

The UTG7204-ON IP PBX can make a VoIP call to the user of another remote UTG7204-ON. The

user of the remote IP PBX can be either extension number or its PSTN numbers.

There are two ways to connect to the remote IP PBX:

(1) The remote IP PBX provides an account name and password. The local IP PBX will make

outgoing call authentication.

(2) The remote IP PBX configures local IP PBX as TrustHost address. All local calls to the remote IP

PBX will be accepted without authentications.

For the first way, the number sent from local IP PBX are the users number provided by the remote IP

PBX.

For the second way, the number sent from local IP PBX will be modified by the remote IP PBX per its

rule. It will be much more convenient by this way to make calls between the two IP PBXs.