Per-call facility options - RPOA selection
Description of Facility
Basic RPOA facility format:
| RPOA = 44hex | digit 1 | digit 2 | digit 3 | digit 4 |
| MSB BCD | MSB BCD | MSB BCD | MSB BCD |
| 44 | 01000100 | RPOA selection facility..................#
Extended RPOA facility format:
first RPOA
| ERPOA = C4hex | length | digit 1 | digit 2 | digit 3 | digit 4 |
| MSB BCD | MSB BCD | MSB BCD | MSB BCD |
second RPOA
+---------------------------------------+
| digit 1 | digit 2 | digit 3 | digit 4 |
| MSB BCD | MSB BCD | MSB BCD | MSB BCD |
+---------------------------------------+
.
.
last RPOA
+---------------------------------------+
| digit 1 | digit 2 | digit 3 | digit 4 |
| MSB BCD | MSB BCD | MSB BCD | MSB BCD |
+---------------------------------------+
| C4 | 11000100 | RPOA selection facility.Extended.........#
UK(b) Extended RPOA facility format will be supported from release 5.
+--------------------------------------------------------------------------------------------+
| X.2 LEVEL 3 PER CALL FACILITY | X.2 (1984) | UK(a) | UK(b) |interworking|
| OPTIONS | REF CLASS | now | now |R5a|R5b| R6 | |
+-------------------------------------+-------------+--------+-----+---+---+----+------------|
| RPOA selection......................| 2.4 A | . |
|
|
|
| |
+--------------------------------------------------------------------------------------------+
