Modems, Dial-In and Dial-Out

 

Table C-9

V.34R with talk/data, Auto-Dial Configuration (dial-out to customer service)*

 

 

 

 

 

 

 

 

Step

 

Command

Function

 

 

 

 

 

 

These configuration commands are for a V.34R modem that has a talk/data pushbutton.

 

 

 

 

 

 

1.

 

AT&F

Initializes factory defaults.

 

 

 

 

 

 

2.

 

ATL1

Modem speaker at minimum volume.

 

 

 

 

 

 

3

 

AT\N3

To enable MNP error correction

 

 

 

 

 

 

4

 

AT%C

To disable data compression

 

 

 

 

 

 

5

 

AT\J

Enables DTE speed conversion

 

 

 

 

 

 

6

 

AT\Q1

Enables flow control

 

 

 

 

 

 

7

 

AT\T3

Enables 3-minute inactivity timer

 

 

 

 

 

 

8.

 

AT&C1

DCD controlled by modem.

 

 

 

 

 

 

9.

 

AT&D2

Modem disconnects when IPX toggles DTR.

 

 

 

 

 

 

10.

 

AT&V

Verify entries. (shows current configuration)

 

 

 

 

 

 

11.

 

AT&W

Saves current settings to non-volatile memory.

 

 

 

 

 

Figure C-2

Dial Modem Cabling for Auto Dial (dial-out to customer service)

 

Auxillary

 

Modem

 

 

port

 

connector

 

FG

1

 

1

 

 

 

TXD

2

 

2

 

 

 

RXD

3

 

3

 

 

 

RTS

4

 

4

 

 

 

CTS

5

 

5

 

 

 

DSR

6

 

8

CD

 

DTR

20

 

20

 

 

 

SG

7

 

7

 

 

Note: Cable must be connected in direction shown from node to modem because wiring is not pin-to-pin symmetrical.

Legend

 

FG

-

Frame Ground

TXD

-

Transmit Data

RXD

-

Receive Data

RTS

-

Request To Send

CTS

-

Clear To Send

DSR -

Data Set Ready

DTR

-

Data Terminal Ready

CD

-

Carrier Detect

SG

-

Signal Ground

12139

BPX Switch Peripherals C-7

Page 385
Image 385
Cisco Systems 8600 Series manual At\J, AT\Q1, AT\T3