Specifications

Specifications – SG 1-U Half-Width Switches Chapter C: ShoreGear Switches
224
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 ShoreWare
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 (10e
-6
) have
occurred; this state will take up to 10 minutes to clear.
— When flashing fast yellow, a series of frame-bit errors (10e
-3
) 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.
C.2.8.3 ShoreGear-220E1 Connectors
The ShoreGear-220E1 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
C.2.9 ShoreGear T1k Voice Switch
The following sections describe ShoreGear T1k resource capacity, LED behavior, and
connectors. The ShoreGear T1k is not supported in installations outside the U.S. and
Canada. Figure C-10 displays the ShoreGear T1k front plate.
C.2.9.1 Switch Capacity
• Digital Circuit Resources: 24 channels maximum
— One T1 circuit, 24 channels per circuit
• Make Me Conference Resource: None
• Maximum IP Phone Resources: None