Multi-Tech Systems MT2456SMI22 Display Delayed Numbers, Syntax *D Example, Behavior in Data Mode

Chapter 4 - V.22bis Commands

*D Display Delayed Numbers

This command causes the modem to send a list of the delayed numbers together with the delay associated with each. The modem will return a list of delayed telephone numbers as defined in the *B command. The format of the response is shown by the example below (delay times are shown as hours:minutes:seconds). If no numbers are delayed, only the OK result code is issued.

Syntax *D

Example

NO. - PHONE NUMBER -DELAY

------ -------------------------------------------

1;	8264734660 2:00:00
2;	7532634661 2:00:00
3;	2587334662 0:02:00
4;	7532651663 0:03:25
5;	7459931664 0:01:45
OK

–STE= Set Telephony Extension

The –STE command enables/disables Line-in-Use, Extension Pickup, and Remote Hangup detection features. Note: Additional hardware may be required to support these features.

Syntax -STE=<value>

Defined Values

<value> Decimal number corresponding to the selected bit-mapped options. The bit fields are defined as follows: Bit 0 Line-in-Use detection enable/disable.

Bit 1 Extension Pickup detection enable/disable. Bit 2 Remote Hangup detection enable/disable.

<value> (Dec.)	Remote Hangup	Extension Pickup	Line-in-Use
0 (default)	Disabled	Disabled	Disabled
1	Disabled	Disabled	Enabled
2	Disabled	Enabled	Disabled
3	Disabled	Enabled	Enabled
4	Enabled	Disabled	Disabled
5	Enabled	Disabled	Enabled
6	Enabled	Enabled	Disabled
7	Enabled	Enabled	Enabled

Reporting Current or Selected Values

Command: -STE?

Response: -STE: <value>

Example: -STE: 4 Remote Hangup enabled, Extension Pickup disabled, and Line-in-Use disabled.

Reporting Supported Range of Parameter Values Command: -STE=? Show available options. Response: -STE:0-7

Result Codes OK <value> = 0-7 ERROR Otherwise

Behavior in Data Mode

When on-hook, if the line is in use and an ATDT is issued, the modem will not go off hook and will return with the message “LINE IN USE”.

When off-hook and either an extension is picked up or a line reversal is detected, the modem will drop the connection. The disconnect reason in register S86=25. The user must flash the hook in order to get a dial tone due because the remote server will be retraining.

If the local handset is picked up while the modem is off-hook, the modem will do a link disconnect, flash the hook for

1.5seconds, and then connect the local handset to the line. At this point, the user dial tone should be on the local handset. The disconnect reason in S86=25.

Operation in Data Mode

Line-in-Use (Enabled by AT-STE=1, AT-STE=3, AT-STE=5, or AT-STE=7) Case 1: Telephone Line is in Use

If an ATDT, ATDP or ATDL is issued while Line-in-Use detection is enabled and the telephone line is in use, the modem will immediately return the message “LINE IN USE” to the DTE without going off-hook, and then return to command mode.

Case 2: Telephone Line is in Use, But Disconnected

If an ATDT, ATDP or ATDL is issued while Line-in-Use detection is enabled and the telephone line is NOT in use, the modem will go off-hook after a short pause, then respond with CONNECT or NO CARRIER message.

Case 3: Telephone Line is Not Connected to Modem

If an ATDT, ATDP or ATDL is issued while Line-in-Use detection is enabled and the telephone line is not connected, the modem will go off-hook momentarily, go back onhook, then respond with NO DIAL TONE message.

Multi-Tech Systems, Inc. MT2456SMI-22 SocketModem Developer’s Guide 25