Page 42 - Cables
Technical Data
X.21 WAN Cable
SAP Code:- 700213408
A
B
C
D
E
A 37 Way D-Type Plug with UNC 4-40 locking screws.
B 15 Way D-Type Plug with M3 locking screws.
C Label
D 6 twisted pair screened cable - each core is 7/0.203mm (24 AWG) tinned copper
stranded wire, nominal capacitance of 98pF/m, impedance of 77
Ω
at 1MHz, screened
with aluminized tape and a tinned copper wire drain.
E 3 meters/9.84ft.
Pin Connections
End A
Name
Cable Notes
End B
1 Receive
(Rx-B)
11
20 Receive
(Rx-A)
Twisted Pair
4
4 Transmit
(Tx-A)
2
23 Transmit
(Tx-B)
Twisted Pair
9
24 Control
(Ctl-A)
3
5 Control
(Ctl-B)
Twisted Pair
10
2 Indicate
(Ind-A)
5
21 Indicate
(Ind-B)
Twisted Pair
12
3 SE-Timing
(S-A)
6
22 SE-Timing
(S-B)
Twisted Pair
13
6 Ground
------
8
Connect pin 7 to pin 6 at End A
only
.
Pin 19 at end A is connected to the Screened Cable Drain Wire.
This cable is used to connect a WAN port to a Digital leased Line.
Page 42 - Technical Data
IP Office - Small Office Edition Installation Manual
Cables
40DHB0002UKED – Issue 2 (29th July 2004