Connecting To Bits Trunk For Clock Synchronization; Figure 5-13: Rj-48C Connector Pinouts For E1/T1 - AudioCodes Mediant 3000 Hardware Installation Manual

Media gateway & enterprise session border controller

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5.4

Connecting to BITS Trunk for Clock Synchronization

When the device is configured for the Building Integrated Timing Source (BITS)

synchronization mode, you need to follow the procedure described in this section for

appropriate cabling.

Note:

For a detailed explanation on configuring the BITS clock synchronization, see the

User's Manual.

In HA mode, both active and redundant TP-6310 or TP-8410 blades are synchronized by

two BITS source interfaces (i.e., input trunks). The BITS trunks flow through the two

SA/M3K blades in the front panel (see Section

timing module, which is located on the PEM modules. Two SA/M3K blades are required to

ensure seamless clock operation in case of failure in one of the SA/M3K blade's timing-

modules (i.e., clock redundancy). When one of the BITS reference clock sources fails, the

device automatically switches to the secondary source as a reference clock for the whole

system.

In Simplex mode, if the primary BITS clock source fails (and clock fallback is enabled), the

device uses the secondary BITS clock source. However, during the transition between the

failed clock and the secondary clock, the device remains in hold-over mode until the

secondary clock is acquired.

The RJ-48c connector pinouts are shown in the figure below:

Hardware Installation Manual

3.5

on page 33), each with a designated

Mediant 3000

Document #: LTRT-94720

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