Cisco
TelePresence
ISDN
Link
Administrator
Guide
D14954.04 ISDN Link Administrator Guide IL1.1.2, MARCH 2015.
Copyright © 2015 Cisco Systems, Inc. All rights reserved.
84
RS-232 9 pin D-SUB pin-out
external view of socket.
5 1
9 6
Pin-out schemes
this page gives an overview of the pin-out schemes for the connectors on the ISDN Link.
Pin-out RS-232 COM Port
1
Pin
Signal name
Direction2
1
Carrier detect, CD
From DCe
2
Receive data, RXD
From DCe
3
transmit data, tXD
to DCe
4
Data terminal ready, DtR
From DCe
5
Signal GND
6
Data set ready, DSR
From DCe
7
Ready to send, RtS
to DCe
8
Clear to send, CtS
From DCe
9
Ring indicator, RI
From DCe
1) only RXD, tXD and signal GND are used, the
other pins are reserved for possible future use.
2) the ISDN Link is the DCe (Data Circuit-
terminating equipment).
ISDN BRI (S/t) interface: 4 × ISDN I.420
(RJ-45 Jack) Basic Rate Interface (S/t).
use any standard ISDN BRI cable to
connect the ISDN Link to BRI.
ISDN PRI (e1/t1) interface: 1 × PRI (RJ-
45 Jack) Primary Rate Interface. use
any standard PRI cable to connect the
ISDN Link to PRI.
ethernet interface: 2 × Gigabit ethernet (RJ-45). Gigabit ethernet requires, at least
Category 5 cable, but Category 5e or Category 6 cables may also be used and are
often recommended. Gigabit ethernet requires all four pairs to be present.
E1/T1 Interface
PRI
Pin-Out
Crossover PRI cable
Pin 1
RX+
4
Pin 2
RX-
5
Pin 4
tX+
1
Pin 5
tX–
2
S/T Interface
BRI
Pin-Out
Pin 3
tX+
Pin 4
RX+
Pin 5
RX–
Pin 6
tX–
Gigabit Ethernet
Pin
Name
Description
TIA/EIA 568A
TIA/EIA 568B
1
BI_DA+
Bi-directional pair A+ (tranceive)
white/green
white/orange
2
BI_DA-
Bi-directional pair A- (tranceive)
green
orange
3
BI_DB+
Bi-directional pair B+ (receive)
white/orange
white/green
4
BI_DC+
Bi-directional pair C+
blue
blue
5
BI_DC-
Bi-directional pair C-
white/blue
white/blue
6
BI_DB-
Bi-directional pair B- (receive)
orange
green
7
BI_DD+
Bi-directional pair D+
white/brown
white/brown
8
BI_DD-
Bi-directional pair D-
brown
brown
RJ-45 Connector pin-out
Front
view
Cable
top
view
1 8
1 8
1 8
Wall
socket
Contents
Introduction
Getting started
Software upgrade
Status information
System settings
Appendices
Appendices
