Multitech BL-Series User Manual download pdf (Page 30)

AT Commands for the MT5656ZDX, MT5600ZDX, MT5600BA/BL-Series Modems

Multi-Tech Systems, Inc. Commands Reference Guide (PN S000273D)

–STE= Set Telephony Extension Continued

Behavior in Voice Mode (+FCLASS=8):

When in voice mode and an extension is picked-up, a <DLE>P is sent to the DTE.

When the modem is off-hook , a line reversal may also be detected in which case a

<DLE>l is sent to the DTE.

In voice mode, there is no blocking of ATDT when the line is in use. Also, there is no

automatic hang-up in voice mode as in data mode. There is only the above stated

<DLE> shielding event reporting.

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 on-

hook, then respond with NO DIAL TONE message.

Extension Pick-up (Enabled by AT-STE=2, AT-STE=3, AT-STE=6, or AT-STE=7):

Case 1: Modem off-hook, Local Handset Goes Off-Hook

If the local handset goes off-hook while the modem is in a data connection, the modem

will then send a GSTN Cleardown to the remote modem and then go on-hook. The

modem will then send a NO CARRIER message to the DTE. A result code of 25 will be

left in S86 register.

Remote Hang-up (enabled by AT-STE=4, AT-STE=5, AT-STE=6, or AT-STE=7):

Case 1: Modem off-hook, Remote Hang-up

If the modem is connected (off-hook) and the remote modem/server goes hangs up,

the central office may issue a line polarity reversal. If a line polarity reversal is detected,

the modem will drop the call and respond with NO CARRIER. The reason for hang-up

can be determined by #UD or by S86=25. A line reversal can also be simulated by

simply pulling out the telephone line during a connection.

Operation in Voice Mode:

Line-In-Use (enabled by AT-STE=1, AT-STE=3, AT-STE=5, or AT-STE=7):

This feature does not apply in voice mode.

Extension Pickup (Enabled by AT-STE=2, AT-STE=3, AT-STE=6, or AT-STE=7)

If the modem is off-hook and an extension goes off-hook, the modem issues a

<DLE>P to the DTE. The application software then hangs up the line (VLS=0).

Remote Hang-up (Enabled by AT-STE=4, AT-STE=5, AT-STE=6, or AT-STE=7)

If the modem is off-hook and the remote user goes on-hook, the modem issues a

<DLE>P to the DTE. The application software then hangs up the line (VLS=0).

Examples:

User is talking on an extension and the modem tries to dial

AT-STE=7

ATDT555-1212

LINE-IN-USE.

The line is not in use and the modem tries to dial

AT-STE=7

ATDT555-1212

Modem goes off-hook

CONNECT

An extension is off-hook but there is silence on the line and the modem tries to dial

AT-STE=3

ATDT555-1212

Modem goes off-hook

NO DIAL TONE

Modem is connected in data mode and remote modem goes on-hook

AT-STE=4

ATDT555-1212

CONNECT

1 2 ... 25 26 27 28 29 30 31 32 33 34 35 ... 59 60

Comments to this Manuals

No comments

Multitech BL-Series User Manual Page 30

Comments to this Manuals

Related products and manuals for Networking Multitech BL-Series