Argent Terminal Adaptor - User Guide
All voice phone calls and data calls will be answered if a telephone number is not entered into the AT command registers. Once an MSN telephone number is entered, the ATA will use this number and only receive calls received for this specific telephone number. All data calls and normal voice calls will only be recognised by the ATA if the phone number matches the number stored in the ATA. The ATA can distinguish if the remote device has sent the call as a data call or a voice call (modems / faxes attached to the POTS port are treated like voice calls). Data calls are directed to the V.24 / RS232 port and voice calls are assigned to the POTS port.
Usually calls are charged to the primary number for billing purposes. A different telephone number can be can be used for charging purposes and then calls assigned to this number would usually appear separately on the same bill. The telephone number used must be stored in the ATA and selected using an abbreviated dialling sequence at the time of dialling. This facility could be used to distinguish between business and home calls.
Equipment with Call Line Identification (CLI) capabilities will only see the primary phone number. The exchange will only pass on the primary number regardless of which number is offered to the exchange.
If an invalid phone number is stored in the ATA for the MSN feature then the exchange will assume the primary number for the phone call, but incoming calls WILL NOT be recognised by the ATA.
Setting the MSN Telephone Number from Phone Handset on the POTS port can be accomplished with by entering
a
Setting Telephone Number from Phone Handset on the POTS port. (Note 2)
OH DT #1# [telephone number] # RH
Note 2: The [telephone number] should be replaced with one of the telephone numbers assigned for your service and is not optional (eg #1#0332551234#).
The ATA’s MSN phone number can also be entered using the AT command shown in section4.2 for the register S51.
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