Per-call facility options - Call redirection or call
deflection notification (CRN)
Description of Facility
Used to notify called party that the call has been redirected/deflected.
--------------------------------------------------------------------------
| Facility | Parameter | reason | length | address of previously | ||
| code | length | for | in | called DTE | ||
| +------------------------- | ||||||
| C3 hex | redirection | semi-octets | MSB BCD | ... | LSD BCD |
--------------------------------------------------------------------------
_
|
01 originally called DTE busy
07 call distribution within a hunt group
09 originally called DTE out of order
0F systematic call redirection
C0-FF call deflection
3
| C3 | 11000011 | Call redirection notification............#
+--------------------------------------------------------------------------------------------+
| X.2 LEVEL 3 PER CALL FACILITY | X.2 (1984) | UK(a) | UK(b) |interworking|
| OPTIONS | REF CLASS | now | now |R5a|R5b| R6 | |
+-------------------------------------+-------------+--------+-----+---+---+----+------------|
| Call redirection notification.......| 2.11 A | . | . | . |
|
| |
+--------------------------------------------------------------------------------------------+
&UKa& = yUKa support
Yes - new to release 4
&UKb& = yUKb support
X.25: NO - planned for future release
CCITT compatibility
X.2 1984 ... A - additional facility
X.2 1988 ... A - additional facility
ISO 8878 compatibility
ONA compatibility
RD 0004 part 8:1.C (PICS proforma Public Network1984)
FR11 - Call redirection Notification ................O = Optional
Therefore release 4 is compatible with ONA for this option.
Test plan and implementation issues
we need to try all combinations of -
hunt group
CRN
CLAMN
enhanced DTE
call originator 1980
call receiver 1980
+ all facility options that could be generated by either end
+ mixing with other options such as redirect
