Specifications

288 Hardware Description and Reference for Avaya Communication Manager
● EI allows injection of a signal towards the framer. When used, the EI jack isolates the
network Rx signal.
● SI allows injection of a signal towards the network. When used, the SI jack isolates the
framer Tx signal from going out to the network.
● EO allows intrusive monitoring of the signal from the framer. When used, the EO jack
breaks the connection of that signal to the network jack RJ48C.
LEDs
Four LEDs are supported on the faceplate. These LEDs include the three standard Media
Module LEDs and the SIG LED that indicates that the MM710 Media Module is receiving a valid
signal.
DB 25 DCE connector
A DB DCE connector is included and can connect a data service unit (DSU) in a future release.
Loopback jack
When your order an MM710 T1/E1 Media Module, Avaya recommends that you include the
optional 700A loopback jack. With the loopback jack installed, you can loop back the T1 up to
the network facility without a dispatch. If the MM710 is sold with an Avaya Service Agreement,
the jack must be ordered and installed to save time and money on service calls.
The jack is usually used for CO trunk installations. The jack is inserted as close to the network
or service provider T1 facility as possible. When the jack is activated from the G700 Media
Gateway, the jack sets up loopbacks in both directions. The G700 Media Gateway can then
send and receive a test pattern. The test pattern verifies the function of the MM710 and T1
cable up to the network T1 facility. In normal operation, the jack passes the T1 signals through
undisturbed in both directions.