NETGEAR XM128, Справочное руководство

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Reference Guide for the Model XM128 ISDN Digital Modem
Analog Call Handling 8-3
Making and Receiving Analog Calls
This section explains the role of analog adapters in placing outgoing analog calls and receiving
incoming analog calls.
Placing a Call from the Analog Adapter
Making a call from the analog adapter is as easy as picking up the telephone connected to the
analog port and dialing. With a terminal program, you can also use the Model XM128 modem
to dial the number for you.
To place a call from the analog adapter, follow these steps:
1.
Type ATDB714-693-0808 (dial the number).
You should see this message:
CONNECT (Dialing is complete)
2.
Pick up the phone handset and wait for the remote device to answer.
3.
Use ATDAs (ATDBs) to place a call for the analog adapter 1 (analog adapter 2).
When the hook sensor of the analog adapter detects that the handset on the telephone device is
picked up (off hook), it sends a setup message to the ISDN central exchange to request a
connection. One B channel, if available, is assigned to this connection, and the exchange waits
for the dialed number to route the call. At the same time, a dial tone is presented to the adapter
port to prompt the user to dial. Both tone and pulse dialing are accepted.
A busy tone is heard on the handset if:
• The B channel is unavailable.
• The dialed number is undeliverable.
• The called party is busy.
This busy tone indicates the failure of the attempt to connect. To place another call, hang up
the phone; then pick it up again. If the called party is alerted, a ring-back tone is heard.