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Argent Terminal Adaptor - User Guide
Version 1.1 Telstra Corporation Limited
Page 28/29 ACN 051 775 556
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.