Configuring Internal Clock As Clock Source - AudioCodes Mediant 1000 User Manual

folder > TDM Bus Settings), and then do the following:
a. From the 'TDM Bus Clock Source' drop-down list (TDMBusClockSource), select
Network to recover the clock from the line interface.
b. In the 'TDM Bus Local Reference' field (TDMBusLocalReference), enter the trunk
from which the clock is derived.
Note: The E1/T1 trunk should recover the clock from the remote side (see below
description of the 'Clock Master' parameter). The BRI trunk should be configured as
an ISDN user-side.
c. Enable automatic switchover to the next available "slave" trunk if the device
detects that the local-reference trunk is no longer capable of supplying the clock
to the system:
a.
b.
c.
d.
2. (E1/T1 Trunks Only) Configure the PSTN trunk to recover/derive clock from/to the
remote side of the PSTN trunk (i.e. clock slave or clock master): In the Trunk Settings
page, configure the 'Clock Master' parameter (ClockMaster) to one of the following:
•
Recovered - to recover clock (i.e. slave)
•
Generated - to transmit clock (i.e. master)

21.2.1.2 Configuring Internal Clock as Clock Source

You can configure the device to use its internal clock source. The internal clock source is a
stratum 4E-compliant clock source. When the device has no line interfaces, the device
should be configured in this mode.

To configure internal clock as clock source:
1. Set the clock source to be from the device's internal oscillator. In the TDM Bus
Settings page, set the 'TDM Bus Clock Source' parameter (TDMBusClockSource) to
User's Manual
Figure 21-2: Configuring TDM Bus
From the 'TDM Bus PSTN Auto FallBack Clock' drop-down list
(TDMBusPSTNAutoClockEnable), select Enable.
From the 'TDM Bus PSTN Auto Clock Reverting' drop-down list
(TDMBusPSTNAutoClockRevertingEnable), select Enable to enable the
device to switch back to a previous trunk that returns to service if it has
higher switchover priority.
In the Trunk Settings page (see ''Configuring Trunk Settings'' on page 447),
configure the priority level of the trunk for taking over as a local-reference
trunk, using the 'Auto Clock Trunk Priority' parameter
(AutoClockTrunkPriority). A value of 100 means that it never uses the trunk
as local reference.
Mediant 1000B Gateway & E-SBC
450 Document #: LTRT-27045