Configuring System Timing; Clock Settings - AudioCodes Mediant 3000 User Manual

User's Manual

22.2.3 Configuring System Timing

The System Timing page allows you to configure the device's clock synchronization
mechanism. For a description of these parameters, see ''PSTN Parameters'' on page 962.

To configure the device's system timing:
1. Open the System Timing page (Configuration tab > VoIP menu > TDM & Timing >
System Timing).
2. Configure the parameters as required.
3. Click Submit.
4. Save the changes to flash memory, see ''Saving Configuration'' on page 672.

22.2.4 Clock Settings

In a traditional TDM service network such as PSTN, both ends of the TDM connection must
be synchronized. If synchronization is not achieved, voice frames are either dropped (to
prevent a buffer overflow condition) or inserted (to prevent an underflow condition). In both
cases, connection quality and reliability is affected.

PSTN line clock (see ''Recovering Clock from PSTN Line'' on page 434)

BITS synchronization (see Configuring BITS Synchronization Mode on page 435)

Internal clock (see ''Configuring Internal Clock as Clock Source'' on page 436)
Version 7.0
Figure 22-4: System Timing Page
433
22. Digital PSTN
Mediant 3000