Cisco TelePresence ISDN Link Reference Manual page 8

Cisco TelePresence ISDN Link
Contents Introduction
Connecting to the ISDN Link
Accessing XACLI
XACLI can be accessed through SSH via the LAN interface or
through the COM port by connecting a serial cable to the serial
interface connector, referred to as the COM port.
The COM port (RS-232) is a 9-pin, female, D-sub connector
located on the back of the unit. The connector is marked with
the text: COM.
COM Port settings
Use: 115200 bps, 8 data bits, 1 stop bit, no parity.
SSH login
•
User name is: admin
•
The default password is blank.
Serial port login
•
User name is: admin
•
The default password is blank.
D14953.01 ISDN Link API Reference Guide IL1.0 June 2012.
© 2012 Cisco Systems, Inc. All rights reserved.
About the API About the API xConfiguration
Hardware & Cabling (RS-232)
The pin outs for the RS-232 are defined in the tables to the
right. Observe that the DTE (Data Terminal Equipment), could
be a PC or any other device capable of serial communication.
Cable. A straight-through cable should be used between
the RS-232 port and the DTE. The lower table shows the
recommended cable-wiring scheme when connecting the
ISDN Link to a PC through RS-232.
DTR and RTS are ignored. DSR, CD, and CTS are always
asserted, while RI is not used.
Troubleshooting (RS-232)
If communication cannot be established between the PC/
terminal and the unit, the following should be checked:
1. Verify that the serial cable is a straight-through 9-pin to
9-pin cable.
2. Confirm that the configuration of the PC/terminal's serial
RS-232 port is identical to the configuration of the RS-232
port.
3. Verify that the PC/terminal's serial RS-232 port is working
properly by connecting it back-to-back to another PC/
terminal (using a special crossover cable for that purpose)
and send characters in both directions.
8
xCommand xStatus
COM port (RS-232)
Pin Signal name
1 Carrier detect, CD
2 Receive data, RXD
3 Transmit data, TXD
4 Data terminal ready, DTR
5 Signal GND
6 Data set ready, DSR
7 Ready to send, RTS
8 Clear to send, CTS
9 Ring indicator, RI
Cable wiring (RS-232) DCE <-> PC
DCE 9 pin
1 CD
2 RD
3 TD
4 DTR
5 GND
6 DSR
7 RTS
8 CTS
9 RI
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Direction
From DCE
From DCE
To DCE
From DCE
From DCE
To DCE
From DCE
From DCE
Direction PC DTE, 9 pin
—> 1 CD
—> 2 RD
3 TD
<—
4 DTR
<—
<—> 5 GND
—> 6 DSR
<— 7 RTS
—> 8 CTS
—> 9 RI
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