Installation guide

ShoreTel E1k Voice Switch ShoreTel Voice Switches
F
ShoreTel 14.2 Planning and Installation Guide 451
 Framing: This LED indicates network framing status, as follows:
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When green, the T1/E1 signal is in frame; the signal is synchronized.
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When yellow, a yellow alarm has been received from the Central Office.
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When flashing yellow, the frame-bit error rate has exceeded its limits. A small number of
frame-bit errors (>1 per million) have occurred; this state will take up to 10 minutes to clear.

When flashing fast yellow, a series of frame-bit errors (>1 per 1000) have occurred.
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When red, the T1/E1 signal is out-of-frame (OOF). The received signal cannot be framed to
the Extended Superframe (ESF) or D4 format.
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When flashing red, loopback is active (local or CO).

When off, the switch has no power.
ShoreTel T1k Connectors
The ShoreTel T1k voice switch contains the following components:
 1 3.5 mm mono connector for audio input (music on hold)
 1 3.5 mm mono connector for audio output (overhead paging and night bell)
 1 DB-9 female connector for maintenance
 2 RJ-45 connectors for the LAN interface
 1 RJ-45 T1 telco port
 1 RJ-45 T1 monitor port for connecting test equipment
ShoreTel E1k Voice Switch
The following sections describe ShoreTel E1k resource capacity, LED behavior, and connectors. The
ShoreTel E1k is not supported in installations outside the U.S. and Canada. Figure 88 displays the
ShoreTel E1k front plate.