AudioCodes Mediant 1000B - TRUNKS (E1;T1) Module; Figure 3-5: TRUNKS Module; Leds Description; Ports Description

Mediant 1000B Gateway & E-SBC
Hardware Installation Manual 20 Document #: LTRT-41441
3.2.4 TRUNKS (E1/T1) Module
The device supports up to six E1 / eight T1 trunks. If the power fails, a relay connects Trunk
1 to Trunk 2 (in the same module) acting as a fallback for PSTN trunk.
3.2.4.1 Ports Description
The module is available in 1-, 2-, or 4-span configurations, providing RJ-48c ports. The
ports are labeled I, II, III, and IIII.
Figure 3-5: TRUNKS Module
3.2.4.2 LEDs Description
Each Trunk port provides a LED for indicating operating status, as described in the table
below:
Table 3-6: E1/T1 PRI TRUNKS Module LEDs Description
Color State Description
Green
On Trunk is synchronized (normal operation).
Red
On Loss due to any of the following signals:
 LOS - Loss of Signal
 LOF - Loss of Frame
 AIS - Alarm Indication Signal (the Blue Alarm)
 RAI - Remote Alarm Indication (the Yellow Alarm)
- Off Failure / disruption in the AC power supply or the power is
currently not being supplied to the device through the AC
power supply entry.