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For pinouts of cable connectors for the TIM518, see “TIM518 Connector
Pinout” on page 244.
To install or remove an Avaya VoIP module, see “Replacing a PIM” on page 172.
TIM518 LEDs indicate link status and activity. Table 46 on page 79 describes the
meaning of the LEDs.
Table 46: LEDs for TIM518
DescriptionStateColorLabel
Alarm. A TIM518 failure requires
monitoring or maintenance.
On steadilyRed
ALM
Active. A device connected to the
TIM518 is in use. This situation can
include a telephone that is off the
hook.
BlinkingYellow
ACT
For more information about the TIM518, see the Avaya manual Hardware Description
and Reference for Avaya Communication Manager.
TIM521 BRI Telephony Interface Module
The TIM521 BRI Telephony Interface Module (Figure 47 on page 79), also known as
the TIM521 BRI media module, has four ports with RJ-45 jacks that can be
administered as ISDN Basic Rate Interface (BRI) trunk connections. Each ISDN BRI
port has two B-channels plus a D-channel. Up to two TIM521s (with 4 BRI trunk ports
each) can be installed in any of the slots on the Services Router.
Figure 47: TIM521 BRI Telephony Interface Module
For ISDN BRI trunking, the TIM521 supports up to four BRI interfaces to the central
office at the ISDN T reference point. Information is communicated on each port in
two ways:
■ Over two 64-Kbps B-channels, called B1 and B2, that can be circuit-switched
simultaneously
Avaya VoIP Modules ■ 79
Chapter 3: PIM and VoIP Module Overview