Auto Answer; Manual Answer - Nortel Meridian SL-100 Reference Manual

Procedure 9-3
Incomplete Hayes keyboard call
1 Type ATDnnnn (CR). The MCA sends digits when (CR) is received and the
network connection is established.
2 The data connection fails.
Response:
The following prompt is displayed:
NO CARRIER
The call is released.
3 You have completed this procedure.

Auto answer

Incoming calls are answered automatically if Register S0 is set to any value
between 1 and 255. This value is the number of rings before the incoming
call is answered by the MCA. Procedure 9-4 describes how to Auto Answer
a Hayes data call.
Procedure 9-4
Auto answering a Hayes data call
1 When the MCA detects an incoming call, the following message displays on the
screen:
RING
Response:
MCA counts rings up to the value of S0.
2 The MCA answers. The following message displays on the screen:
CONNECT
Response:
Data connection is established.
3 You have completed this procedure.

Manual answer

If Register S0 contains 0, the MCA does not answer automatically, and a
data call must be answered using the ATA command. Procedure 9-5
illustrates how to answer a Hayes data call manually.
Meridian SuperNode MSL-100 Meridian Modular Telephones Reference Manual MSL11
Hayes keyboard dialing 9-13