Pic Model Descriptions; At-Ar020 Pri E1/T1 Pic - Allied Telesis AT-AR020 PRI E1/T1 Hardware Reference Manual

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PIC Model Descriptions

This section provides detailed information on the features of each PIC model.

AT-AR020 PRI E1/T1 PIC

The AT-AR020 PRI E1/T1 PIC provides a single G.703/Primary Rate ISDN
WAN port with an RJ-45 connector.
The card supports both E1 and T1 operation. A jumper selects the required
option and impedance. A second jumper selects NT (Network Terminator) or TE
(Terminal Equipment) mode, and the current mode is displayed by the NT LED.
The normal operating mode is LT. Jumper locations are shown in
page 7, and jumper functions are listed in
The AT-AR020 PRI E1/T1 PIC is shown in
LEDs are listed in Table
Figure 1: AT-AR020 PRI E1/T1 PIC
LEDs
Table 1: AT-AR020 PRI E1/T1 PIC LED functions
LED Function
D Data [ISDN mode only] Lit when HDLC packets are being exchanged between
the switch or router and the ISDN switch over the D (signalling) channel.
B Data Lit when HDLC packets are being exchanged between the switch or
router and another end system device (normally another switch or router)
over any of the B (data) channels.
Active Lit whenever operational (i.e., no RAI or AIS) frames are being received.
NT [ISDN mode only] Lit when the PRI1 is operating in NT mode. This LED
should not be lit during normal operation.
Table 2 on page
Figure
1.
PRI E1/T1 (RJ45 connector)
D Data
B Data
Port Interface Card
Figure 2 on
7.
1, and the functions of the
Active
NT
LEDs
C613-03023-00 REV J
PIE1T1R