The ShoreTel Voice Switch E1k has the ability to provide higher density trunking for locations using E1 PRI signaling. The ShoreTel Voice Switch E1k device can also be used as a gateway to legacy PBX systems in applications.The E1k also come equipped with a stereo input and output.
2 RJ-45 LAN connectors
1 RJ-45 E1 port for connecting the switch to a telephone company line
1 RJ-45 E1 monitor port for connecting test equipment
1 DB-9, RS-232C maintenance port for serial communications
1 3.5 mm stereo input for connecting a music-on-hold source
1 3.5 mm stereo output for connecting to a overhead paging system or night bell