Patton electronic SmartNode 4830 Series - Manual (Page 39)

Installing the VoIP IAD 39
SmartNode 4830 Getting Started Guide 3 • Hardware installation
The signal pin-outs for the Model 4830 X.21 interface are shown in table 7 .
The SN4830’s X.21 interface is wired as a DTE, however, it can also be configured as a DCE. The SN4830’s
X.21 interface requires a cable with a male DB-15 connector. Attach the male DB-15 connector of the X.21
cable to the female DB-15 connector on the SN4830. Attach the other end of the cable to the X.21 connector
on local modem or multiplexer device.
Installing the T1/E1 twisted pair cables. The T1/E1 is usually connected to a PBX or switch (local exchange
(LE)). Type and pin-outs of these devices vary depending on the manufacturer. In most cases, a straight-
through RJ-48C to RJ-48C can be used to connect to the T1/E1 (see for E1 RJ-48C pin-out listing) with a
PBX. A cross-over cable is required to connect to an NT1.
Figure 18. Rear panel of SN4830 T1/E1 -/K Model
Figure 19. Rear panel of SN4830 T1/E1 -/T Model
Table 8. Signal pin-outs for the X.21 interface on the SmartNode 4830
Pin Signal Pin Signal
1 Frame Ground 8 Signal Ground
2 TXDa 9 TXDb
3 CNTa 10 CNTb
4 RXDa 11 RXDb
5 INDa 12 INDb
6 SETa 13 SETb
Table 9. RJ-48C receptacle
Pin Signal
1 TX tip
2 TX ring
3 TX shield
4 RX tip
5 RX ring
6 RX shield
0/4 0/5 0/6 0/7
RX TX
0/4 0/5 0/6 0/7