Juniper Networks J4350, J6350 manual TIM521 BRI Telephony Interface Module, LEDs for TIM518

Chapter 3: PIM and VoIP Module Overview

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

Label	Color	State	Description
ALM	Red	On steadily	Alarm. A TIM518 failure requires
			monitoring or maintenance.
ACT	Yellow	Blinking	Active. A device connected to the
			TIM518 is in use. This situation can
			include a telephone that is off the
			hook.

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

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