AudioCodes Mediant 3000, User Manual

Page: 771 / 872

Version 6.6 771 Mediant 3000
User's Manual 53. Configuration Parameters Reference
Parameter Description

For this parameter to take effect, a device reset is required.

For an overview on TDM tunneling, see 'TDM Tunneling' on
page
309 .
53.11.6.2 TDM Bus and Clock Timing Parameters
The TDM Bus and clock timing parameters are described in the table below.
TDM Bus and Clock Timing Parameters
Parameter Description
TDM Bus and BITS (Timing) Parameters
Web/EMS: PCM Law Select
[PCMLawSelect]
Determines the type of pulse-code modulation (PCM)
companding algorithm law in input and output TDM bus.

[1] Alaw

[3] MuLaw
The default 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.
Web/EMS: Idle PCM Pattern
[IdlePCMPattern]
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.
Web/EMS: Idle ABCD Pattern
[IdleABCDPattern]
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.
Web/EMS: TDM Bus Clock
Source
[TDMBusClockSource]
Determines the clock source to which the device synchronizes.

[1] Internal = (Default) Generate clock from local source.

[4] Network = Recover clock from PSTN line.
Note: This parameter is not required when operating in BITS
mode.
Web/EMS: TDM Bus Local
Reference
[TDMBusLocalReference]
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