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Span Status LEDs. The DS1 card contains eight Span Status LEDs, viewable from the front of the chassis, to
provide a high level indication of the traffic status between the T1/E1 lines (also available on the rear of the
chassis) and the network equipment (i.e., PBX or PSTN). Each LED relates to one line on the rear of the DS1
card.
•
Off. SPAN is not connected. See Chapter 8: Diagnostics/Maintenance for a detailed description and
troubleshooting techniques.
•
Green. Line is operating properly.
•
Red. Local alarm generated (i.e., loss of framing).
•
Amber. Remote alarm generated (i.e., remote side has a problem and is sending a Yellow alarm).
Hot Swap LED. A lit blue light indicates that the DS1 card is not in service.
RJ-48 Input/Output ports. The eight RJ-48 connectors on the rear of the DS1 card (the transition module)
are used to provide network access; they route signals between the T1 or E1 and a piece of network equipment
(i.e., PBX or PSTN). The input/output signals are listed in Table 2-6.
Port#
1-8
1-8
1-8
1-8
1-8
1-8
1-8
1-8
Ethernet port LEDs (rear view). Not available in current release.
P/N 480-0005-00-15
Figure 2-21 RJ-48 Port Pin Order
Table 2-6 DS1 Signal for DS1Card - RJ-48 Ports
Pin
1
RR -
2
RT +
3
N/C
4
TR -
5
TT +
6
N/C
7
N/C
8
N/C
Chapter 2: Hardware Components
Signal
Definition
Receive Ring
Receive Tip
Not Connected
Transmit Ring
Transmit Tip
Not Connected
No Connect
No Connect
2-24
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