Cisco TelePresence ISDN Link
Contents
Introduction
Pin-out schemes
This page gives an overview of the pin-out schemes for the connectors on the ISDN Link.
HD D-SUB 26 pin-out
External view of socket.
1
9
10
18
19
26
Pin-out V.35 DTE - DCE Port
Pin
Signal Name
Description
1
FGND
Frame GND on equipment
11
SD(A)
Send Data / Transmit
12
SD(B)
Send Data / Transmit
13
RD(A)
Receive Data
14
RD(B)
Receive Data
15
SCR(A)
Signal Clock Receive
16
SCR(B)
Signal Clock Receive
17
SCT(A)
Signal Clock Transmit
18
SCT(B)
Signal Clock Transmit
19
Signal GND
GND
1
22
RLSD(CD)
Received Line Signal
Detector / Carrier Detect
23
RLSD(GND)
1
Signal GND
24
RI
Ring Indicator
25
LOS
Loss of Signal (KG194)
26
DTR
Data Terminal Ready
1) These pins are connected to ground for
correct operations
D14954.01
ISDN Link Administrator Guide IL1.0, June 2012.
Copyright © 2012 Cisco Systems, Inc. All rights reserved.
Getting started
Configuration examples
Pin-out RS449 DTE - DCE Port
Pin
Signal Name Description
1
Frame GND
FGND
1
11
SD(A)
Send Data
12
SD(B)
Send Data
13
RD(A)
Receive Data
14
RD(B)
Receive Data
15
RT(A)
Receive Timing
16
RT(B)
Receive Timing
17
ST(A)
Send Timing
18
ST(B)
Send Timing
19
GND
GND
2
20
TR(A)
Terminal Ready
21
TR(B)
Terminal Ready
22
RR(A)
Carrier Detect / Receiver Ready
23
RR(B)
Carrier Detect / Receiver Ready
24
IC
Incoming Call
25
LOS
Loss of Signal (KG194)
1) Frame GND is connected to pin 1 on DTE
2) This pin is connected to ground for correct
operations
Password protection
Pin-out RS366 DTE - DCE Port
Pin
Signal Name
Description
1
FGND
Frame GND
2
DPR
Digit Present
3
ACR
Abandon Call & Retry
4
CRQ
Call Request
5
PND
Present Next Digit
6
DLO
Data Line Occupied
7
NB1
Digit Bit 1
8
NB2
Digit Bit 2
9
NB4
Digit Bit 4
10
NB8
Digit Bit 8
24
Administrator guide
Appendices
Appendices
Contact us
Pin-out X.21 DTE - DCE Port
Pin
Signal Name Description
1
FGND
Frame GND
11
T(A)
Send Data / Transmit
12
T(B)
Send Data / Transmit
13
R(A)
Received Data / Receive
14
R(B)
Received Data / Receive
15
S(A)
Signal Element Timing
16
S(B)
Signal Element Timing
20
C(A)
Terminal Ready / Control
21
C(B)
Terminal Ready / Control
22
I(A)
Carrier Detect
23
I(B)
Carrier Detect
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