Installation guide

440 Planning and Installation Guide ShoreTel 14.2
ShoreTel Voice Switches ShoreTel 220T1A Voice Switch
F

When off, the switch has no power.
ShoreTel 220T1 Connectors
The ShoreTel 220T1 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 220T1A Voice Switch
The following sections describe ShoreTel 220T1A resource capacity, LED behavior, and connectors.
The ShoreTel 220T1A is not supported in installations outside the U.S. and Canada. Figure 85 displays
the ShoreTel 220T1A front plate.
Figure 85: ShoreTel 220T1A Front Plate
Switch Capacity
 Analog Circuit Resources

Ports 1-2: Two Loop Start Trunks

Ports 9-12: Four Extensions or DID Trunks. A single command configures all ports as either
Extensions or DID trunks.

Power Failure Transfer Unit: Trunk Port 1 to Extension Port 12
Default
Switch
Audio Output Port
(night bell)
Power
LED
Network
LEDs
LAN 2
Connector
RS-232C
Maintentance
Port
Status
LED
Audio Input Port
(music on hold)
Network
LEDs
T1 LEDs
T1 LEDs
LAN 1
Connector
T1 Monitor
Port
T1 Telco
Port
RJ-21X
Telco Port