Juniper Networks J-series Services Router J2320 - Manual (Page 102)

NOTE: The TIM521 does not support BRI stations or combining both B-channels
together to form a 128-Kbps channel.
■ Over a 16-Kbps channel, called the D-channel, that is used for signaling. The
TIM521 occupies one time slot for all four D-channels
The circuit-switched connections have an a-law or mu-law option for voice operation.
The circuit-switched connections operate as 64-Kbps clear channels transmitting
data.
For pinouts of cable connectors for the TIM521, see “TIM521 Connector
Pinout” on page 245.
To install or remove an Avaya VoIP module, see “Replacing a PIM” on page 172.
TIM521 LEDs indicate link status and activity. Table 47 on page 80 describes the
meaning of the LEDs.
Table 47: LEDs for TIM521
Description State Color Label
Alarm. A TIM521 failure requires
monitoring or maintenance. On steadily Red ALM
Active. A trunk connected to the
TIM521 is in use. On steadily Yellow ACT
For more information about the TIM521, see the Avaya manual Hardware Description
and Reference for Avaya Communication Manager.
80 ■ Avaya VoIP Modules
J2320, J2350, J4350, and J6350 Services Router Getting Started Guide