Multitech MultiModem ZBA Series At Commands Reference Manual page 25

Command:
Values:
Default:
Description:
Command:
Values:
Default:
Description:
Multi-Tech Systems, Inc. AT Commands for the MT5634 Family of Products (S000272J)
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*DW Busy-Out Timer at End of Call
0-255
0
This command defines the amount of time to busy out the modem upon disconnecting from
a DID call. The delay is ended when the timer runs out or a *DS command is received.
*DW0 This command disables the delay. It ends the delay, but it also places the DID
line a busy-out state.
*DW255 This command will extend the delay indefinitely.
About the Busy-Out Features and Functions
A Direct Inward Dial (DID) line can be put in a "Busy Out" state by reversing the battery
polarity the modem supplies to the line. This will cause a caller to receiver either a busy
signal in a single line system or roll over to the next line in a trunk system.
The line is busied out in the following cases.
- Modem is set to the factory default DID start format *DS0
- Modem receives an incoming ring on the POTS line
- Modem is given the dial command ATD
- Modem is set with the *DW command to busy-out delay after finishing a call
*DF Format for Reporting Incoming DID Number
0, 1, 2
0
This command allows for three different reporting formats of the incoming number
information. This information is output when either the proper number of digits have been
received or the time out timer has expired and before the modem answers the call. When set
to *DFI, the modem will output one line for every digit received. For the other formats, the
modem will only output one line per call.
*DF0 "DID:xxx" - Default
*DF1 "DTMFx" for each digit
*DF2 "RINGxxx"
Chapter 1 – AT Commands
25