User`s manual

Configure the numbering with FXS / FXO ports. (Depending on model)

FXS Number:

The representation number is the phone number of the telephone that is connected to FXS

port.

FXO Number:

FXO ports are connected to the extension ports of the PBX system or the PSTN line. They

have a common Line Hunting Group Number. When this number is dialed, the Gateway

system will find a free FXO line connected to PBX. This hunting will skip all busy lines and

absent lines and find only the idle line to the PBX. After the available line is found, you can

hear the dial tone from PBX. After that, you can dial the needed phone number out through

PBX.

Configure the ANI (Answer Number Indication) / Caller ID of the FXS/FXO ports.

ITSP needs ANI for authorization when gateway calls Off-Net call to PSTN number or mobile phone

number.

(If user does not have Gatekeeper, Please go to 4.2.2: H.323 Dialing Plan Policy)