Planet VIP-281 Series User Manual page 29

Configure the numbering with FXS / FXO ports. (Depending on GW model number: if user uses the
model number is VIP-1680, this VIP-1680 has 16 voice channels for setting, and the VIP-2480 had 24
voice channels for setting)
FXS Number
FXO Number
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.
Register to H.323 Gatekeeper server
Note: If user does not have Gatekeeper, please go to H.323 Dialing Plan Policy for more
understandings.
The representation number is the phone number of the telephone that is
connected to FXS port.
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 VIP-GW 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.
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