IP Office Installation
Installation Manual Page 92
IP Office 2.1 40DHB0002USCL Issue 10c (11th May 2004)
X.21 WAN Cable
SAP Code:- 700213408
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 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.