Configuring Telco Spans
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12.
For each enabled channel, click the
Format Precedence
cell and
type the applicable token. For incoming calls, format precedence
determines the priority for selecting which numbering format to use as
the destination number for telecommunications auditing and Policy
enforcement if similar data values are present in the signaling string.
If DID/DNIS lines are used, the
Format Precedence
must specify
DID/DNIS to enable the Dialing Plan to correctly convert the
extensions for Policy enforcement and the DID section of the Dialing
Plan must be correctly configured.
The table below lists valid Format Precedence tokens.
ADDR
Destination number (address)
DID
Direct Inward Dialing
DNIS
Dialed Number Identification Service
To set the same format precedence for an adjoining group of
channels, click the first
Format Precedence
cell, hold down
SHIFT, click the last cell, and then type the string. Press ENTER
to populate the selected cells.
13.
(
SS7 Bearer Spans only
) Each channel on an ISUP bearer trunk has an
associated Circuit Identification Code (CIC), ranging from 0 to 16383,
and is unique for each LPC/RPC pair.
In the
CIC
field, type 0 for the first channel.
–
Alternately, you can right click in the
CIC
field, and then
select
Increment Down
to automatically number the CICs
for the other channels incrementally.
–
If you are configuring fully associated SS7 Signaling Links on
a Bearer Span,
Increment Down
skips the signaling
channels.
14.
(
Digital Spans only
) The
Companding
column specifies for each
channel whether to use A-Law or Mu-Law media formats. This enables
you to set the Span to match the companding format in use in your
locale, if needed. By default, all channels on E1 Spans are set to A-Law
companding, while all channels on T1 Spans are set to Mu-Law.
To change the setting:
For a single channel, click in the
Companding
field for that
channel, and then click the down arrow and select the option.
For multiple adjacent channels, click in the first
Companding
field, hold down SHIFT, and then click in the last
Companding
field, click the down arrow in that field, and select the option.
