Primary Rate Isdn Interface - Allied Telesis AT-AR020 PRI E1/T1 Hardware Reference Manual

Hardware Reference
C613-03023-00 REV N
Table 12: Pinout of the Basic Rate ISDN interface
Pin S/T Interface Functions
1 -
2 -
3 TX+
4 RX+
5 RX-
6 TX-
7 -
8 -
The V2 hardware revision of the AT-AR021(S) PIC supports both TE and NT
operational modes. A jumper is used to select the operational mode. See
"AT-AR021(S) BRI-S/T PIC" on page 8
revision of the AT-AR021(S) PIC and the AT-AR021(U) PIC support TE mode
only. The hardware revision is identified by the label "AR021 V2" or
"AR021v3" printed on the board. The Integrated Services Digital Network (ISDN)
chapter of the AlliedWare
or router has detailed descriptions of the two operational modes. Your switch
or router should be configured as a TE for normal operation.
The AT-AR021(S) PIC can be configured using jumpers to provide 100Ω line
termination. See "AT-AR021(S) BRI-S/T PIC" on page 8

Primary Rate ISDN Interface

The AT-AR020 PRI E1/T1 PIC provides a Primary Rate ISDN interface with a
single RJ-45 connector. The interface supports connection to either 100Ω T1 or
120Ω E1 networks. Table 2 on page 7
networks. Table 13 shows the pinout of the PRI interface.
Table 13: Connection standard for Primary Rate ISDN RJ-45 connectors
Pin* Signal
1 RX+
2 RX-
3 RX ground selection from jumper
4 TX+
5 TX-
6 TX ground selection from jumper
7 Not connected
8 Not connected
*Pins are numbered from left to right, with latch down, as viewed from the rear.
U Interface Functions
-
-
-
positive (+)
negative (-)
-
-
-
for more information. The V3 hardware
®
Operating System Software Reference for your switch
lists the jumper settings for E1 and T1
21
for more information.