User's Manual 968 Document #: LTRT-89730
Mediant 3000
Table 58-55: TDM Bus and Clock Timing Parameters
Parameter Description
TDM Bus and BITS (Timing) Parameters
TDM Bus Type
[TDMBusType]
Defines the TDM bus interface.
ï‚§ [2] Framers (default)
ï‚§ [4] H110
Note: Only one TDM bus interface can be enabled at a time,
although more than one can physically exist on the device.
TDMBusSpeed
[TDMBusSpeed]
Defines the TDM bus speed according to the TDM bus type (see
the TDMBusType parameter).
ï‚§ [0] 2 Mbps
ï‚§ [2] 4 Mbps
ï‚§ [3] 8 Mbps
ï‚§ [4] 16 Mbps (default)
PCM Law Select
[PCMLawSelect]
Determines the type of pulse-code modulation (PCM) companding
algorithm law in input and output TDM bus.
ï‚§ [1] Alaw
ï‚§ [3] MuLaw
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:
ï‚§ For the parameter to take effect, a device reset is required.
ï‚§ Typically, A-Law is used for E1 spans, Mu-Law for T1/J1 spans.
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 the parameter to take effect, a device reset is required.
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:
ï‚§ For the parameter to take effect, a device reset is required.
ï‚§ The parameter is applicable only when using PSTN interface
with CAS protocols.
TDM Bus Clock Source
[TDMBusClockSource]
Defines the clock source to which the device synchronizes.
ï‚§ [1] Internal = (Default) Generate clock from local source.
ï‚§ [4] Network = Recover clock from PSTN line.
Notes:
ï‚§ For the parameter to take effect, a device reset is required.
ï‚§ The parameter is not required when operating in BITS mode.
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.