Verilink WANsuite 6450, Reference Manual

Page: 149 / 205

V T 1 0 0 I n t e r f a c e 4-41
The Channel Table Details screen lets you establish the Rate, Service, and
Idle Pattern parameters for any available channel. The screen parameters are
described below.
Rate The unit can operate at any data rate that is a multiple of 56 or 64 kbps. You
must set this value in accordance with the table on page 4-40 for proper
operation.
Values: 56K/Signaling, 64K
Default: 64K
Service Specifies the service to which this channel is allocated. Service Index “0”
indicates the channel is not used or is idle. Service Index “4” indicates the
channel is allocated to the CBR interface. Service Index “5” indicates the
channel is allocated to the Serial interface.
Idle Pattern Selects the idle pattern sent by the unit and lets the unit determine if the idle
pattern has been sent by the other end.
Values: 0
−
FF (Hex)
Default: 7F
NOTICE:
Only channels with a non-zero Service parameter value are assembled
into ATM cells and transported across the SHDSL network. Similarly,
received ATM cells should only contain data for channels with a non-
zero Service parameter value. When reassembling the data stream from
the received ATM cells, only the channels with a non-zero Service
parameter will be assigned data from the ATM cells. The non-active
channels with a Service parameter of “0” will be filled with an idle
pattern (0xFF).
The number of channels you can allocate for the CES service depends on the
available SHDSL bandwidth. The table below shows the maximum number of
channels you can allocate for CES for each possible SHDSL data rate. If the
required CES bandwidth exceeds the available SHDSL bandwidth, the unit
will not allow you to configure the CES service.
SHDSL
Data Rate
(kbps)
Maximum Number of CES Channels
Structured Nx64
Basic Service
Structured Nx64
with E1 CAS Service
Structured Nx64
with T1 CAS Service
192 2 2 2
256 3 3 3
320 4 4 4
384 5 5 5
448 6 6 6
512 7 6 6
576 7 7 8
640 8 8 8
704 9 9 9