Installation guide

ShoreTel-T1 and ShoreTel E1 Voice Switches ShoreTel Voice Switches
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ShoreTel 14.2 Planning and Installation Guide 485
Network LEDs
The network LEDs (LAN1 and LAN2) indicate the speed at which the switch is communicating with the
network and whether there is network activity. The network LED descriptions are as follows:
 Link/Activity: When lit, this LED indicates that the switch is connected to an Ethernet network. This
LED indicates network activity, as follows:

When flashing, network activity is detected.

When on (not flashing), heavy network activity is detected.

When off, network activity is not detected.
This LED is not directly related to any switch’s individual network activity. For example, if three
switches are connected to the same hub and one switch’s Traffic LED shows activity, the other
switches will indicate the same activity.
 100M

When green, the switch is connected to a 100BaseT network.

When off, the switch is connected to a 10BaseT network.
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 T1/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.

When flashing slow yellow, 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.