Tdm Bus And Clock Timing Parameters - AudioCodes Mediant 1000 User Manual

SIP User's Manual

TDM Bus and Clock Timing Parameters

A.12.6.2
The TDM Bus parameters are described in the table below.
Parameter
TDM Bus Parameters
Web/EMS: PCM Law Select
[PCMLawSelect]
Web/EMS: Idle PCM Pattern
[IdlePCMPattern]
Web/EMS: Idle ABCD Pattern
[IdleABCDPattern]
Web/EMS: TDM Bus Clock
Source
[TDMBusClockSource]
EMS/Web: TDM Bus Local
Reference
[TDMBusLocalReference]
Web/EMS: TDM Bus Enable
Fallback
[TDMBusEnableFallback]
Version 6.4
Table A-56: TDM Bus and Clock Timing Parameters
Determines the type of pulse-code modulation (PCM) companding
algorithm law in input and output TDM bus.

[1] Alaw = A-law

[3] MuLaw = Mu-Law
The default value is automatically selected according to the
Protocol Type of the selected trunk: E1 defaults to ALaw, T1
defaults to MuLaw. If the Protocol Type is set to NONE, the default
is MuLaw.
Notes:

For this parameter to take effect, a device reset is required.

Typically, A-Law is used for E1 spans and Mu-Law for T1/J1
spans.
Defines the PCM Pattern that is applied to the E1/T1 timeslot (B-
channel) when the channel is idle.
The range is 0 to 255. The default is set internally according to the
Law select 1 (0xFF for Mu-Law; 0x55 for A-law).
Note: For this parameter to take effect, a device reset is required.
Defines the ABCD (CAS) Pattern that is applied to the CAS
signaling bus when the channel is idle.
The valid range is 0x0 to 0xF. The default is -1 (i.e., default pattern
is 0000).
Notes:

For this parameter to take effect, a device reset is required.

This parameter is applicable only when using PSTN interface
with CAS protocols.
Determines the clock source to which the device synchronizes.

[1] Internal = Generate clock from local source (default).

[4] Network = Recover clock from PSTN line.
Defines the physical Trunk ID from which the device recovers
(receives) its clock synchronization.
The range is 0 to the maximum number of Trunks. The default is 0.
Note: This parameter is applicable only if the parameter
TDMBusClockSource is set to 4 and the parameter
TDMBusPSTNAutoClockEnable is set to 0.
Defines the automatic fallback of the clock.

[0] Manual (default)

[1] Auto Non-Revertive

[2] Auto Revertive
A. Configuration Parameters Reference
Description
687 March 2012