The length of the calling line information element varies according
to where a caller is calling from (e.g. 12 digits for calls from digital
ISDN exchanges, 0 digits for calls from analog exchanges, or 5 digits
for internal calls). To compensate for this, some multiple code-calling
systems can interpret block separator characters (*) and an end-of-block
character (#). These special characters allow you to set a variable A-block
length The block separator characters separate the A-block, the B-block,
and the C-block of a code-calling block. If an answering code is defined,
the end-of-block character follows the C-block. If no answering code
is defined, the end-of-block character follows the B-block.
- Configure the circuit with the TSCSU AMO as for CCM in DISPLAY operation or CCM in
Meet-Me
operation with display;
DIFFERENCE:
OPTYPE=DIS&BLKSEP&BLKEND,
or
OPTYPE=MEETME&BLKTSEP&BLKEND,
and
MABLK=16 (maximum length);
In
this case, for incoming calls from analog exchanges (calling line identification
information element is 0), a single zero is transmitted in the A-block.
If the code-calling system requires fixed lengths for the A block and the B-block,
you
should specify a fixed length for the A-block, and omit the block separators. In this
case, if the answering number differs from the number of the calling party, the left
or
right side of the answering number display block (B-block) will either be filled in
with
zeroes (if the number is shorter) or the number will run off the left or right side
of the
block (if longer).
- Configure the circuit with the TSCSU AMO as for CCM in DISPLAY operation or CCM in
Meet-Me
operation with display;
DIFFERENCE:
OPTYPE=DIS&NOBSEP&NOBEND,
or
OPTYPE=MEETME&NOBSEP&NOBEND,
and
MABLK= betewen 1 and 16;