424 Planning and Installation Guide ShoreTel 14
ShoreTel Voice Switches ShoreTel E1k Voice Switch
F
Status LED (Yellow)
When on steady, no ports are handling active calls and at least one port is out of service.
When flashing slow, the switch is not connected (or has lost connection) to a ShoreTel server.
When flashing fast, at least one port is handling an active call and at least one port is out of
service.
Off: No ports are assigned.
Monitor and Telco LEDs
The Monitor and Telco LEDs indicate line coding, network framing, and loopback status. These LEDs
are color coded—green, yellow, and red. The Monitor and Telco LED descriptions follow.
Telco and Monitor LED alarms and errors are logged as switch events in ShoreTel Director’s event log.
Line Coding: This LED indicates line coding status, as follows:
When green, the line coding signal is good.
When yellow, bipolar violations (BPV) are being received at one second intervals.
When red, a loss of signal (LOS) has occurred.
When flashing red, loopback is active (local or CO).
When off, the switch has no power.
Framing: This LED indicates network framing status, as follows:
When green, the E1 signal is in frame; the signal is synchronized.
When yellow, a yellow alarm has been received from the Central Office.
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.
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.
When flashing red, loopback is active (local or CO).
When off, the switch has no power.
ShoreTel E1k Connectors
The ShoreTel E1k 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)
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