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Integrator's Reference Manual for Polycom HDX Systems
V.35/RS-449/RS-530 Serial Adapter
This adapter is used when connecting a Polycom HDX system to other third-party network equipment. It
adapts the 68-pin interface to an industry standard 44-pin interface used by some network interface
equipment. It is used with Polycom HDX systems that have a V.35/RS-449/RS-530 serial network interface
card (NIC) installed.
Length
6 in (15.23 cm)
Polycom, Inc.
Part Number
RoHS Compliant
2457-21264-200
Yes
Peripheral Link
V.35 HD-68 Pinout
68 pin
Signal Name
Signal Type
Shield
12
Receive Data A
Differential
11
Receive Data B
Differential
10
Send Timing A
Differential
9
Send Timing B
Differential
29
Data Set Ready (DSR)
Single Ended
28
Request To Send (RTS)
Single Ended
27
Data Terminal Ready (DTR)
Single Ended
34
Digit Present (DPR)
Single Ended
24
Abandon Call/Retry (ACR)
Single Ended
32
Call Request (CRQ)
Single Ended
26
Present Next Digit (PND)
Single Ended
21
Data Line Occupied (DLO)
Single Ended
14
Receive Timing A
Differential
13
Receive Timing B
Differential
8
Terminal Timing A
Differential
7
Terminal Timing B
Differential
15
Request To Send (RTS) A
Differential
16
Request To Send (RTS) B
Differential
35**
Receive Common
Gnd
20
BCD Dial Digit Bit 1 (NB1)
Single Ended
19
BCD Dial Digit Bit 2 (NB2)
Single Ended
23
BCD Dial Digit Bit 4 (NB4)
Single Ended
25
BCD Dial Digit Bit 8 (NB8)
Single Ended
2**
Signal Ground
Gnd
6
Send Data A
Differential
5
Send Data B
Differential
reserved (Ascend select line)
63
Clear To Send (CTS) A
Differential
64
Clear To Send (CTS) B
Differential
61
Data Mode (DM-DSR) A
Differential
62
Data Mode (DM-DSR) B
Differential
65
Receiver Ready (RR-DCD) A
Differential
66
Receiver Ready (RR-DCD) B
Differential
4**
Send Common
Gnd
33
Data Carrier Detect (DCD)
Single Ended
18
Terminal Ready (TR-DTR) A
Differential
17
Terminal Ready (TR-DTR) B
Differential
3
V.35 Cable Connected
1
RS449 Cable Connected
22
Distant Station Connected (DSC) Single Ended
30
Clear To Send (CTS)
Single Ended
31
Ring Indicate (RI) (Incoming Call) Single Ended
reserved (Ascend select line)
68
LOS A
Differential
67
LOS B
Differential
* For V.35, connect pin 3 of 68 pin connector to ground
^For RS449, connect pin 1 of 68 pin connector to ground
#For RS530, connect pins 1 and 3 of 68 pin connector to ground
** Gnd pins are 2,4, 35-60
Notes (direction from V.35 module (DTE))
From card Function
V.35
RS530-DB25 RS4449-DB37 RS366-DB25
V.35/RS449/RS530
A
in
V.35/RS449/RS530
R
3
in
V.35/RS449/RS530
T
16
in
V.35/RS449/RS530
Y
15
in
V.35/RS449/RS530
AA
12
in
V.35
E
out
V.35
C
out
V.35
H
out
RS366
in
RS366
out
RS366
in
RS366
in
RS366
in
V.35/RS449/RS530
V
17
in
V.35/RS449/RS530
X
9
out
V.35/RS449/RS530
U
24
out
V.35/RS449/RS530
W
11
out
RS449/RS530
4
out
RS449/RS530
19
RS449
out
RS366
out
RS366
out
RS366
out
RS366
V.35/RS366
B
out
V.35/RS449/RS530
P
2
out
V.35/RS449/RS530
S
14
in
RS449/RS530
5
in
RS449/RS530
13
in
RS449/RS530
6
in
RS449/RS530
22
in
RS449/RS530
8
in
RS449/RS530
10
RS530
7
in
V.35
F
out
RS449/RS530
20
out
RS449/RS530
23
ground to indicate a V.35 cable is attached
ground to indicate a RS449 cable is attached
in
RS366
in
V.35
D
in
V.35/RS449
J
out
RS530 crypto
18
out
RS530 crypto
21
Cables
19
7,18,19#
6
24
5
23
2
3
4
5
22
8
26
17
35
7
25
20
14
15
16
17
7,18,19
4
22
9
27
11
29
13
31
37
12
30
7,18,19*
7,18,19^#
13
15
3
21
33
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