Telecommunications - Configuration of X.25 RPOA selection

 

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 | . |

|

|

|

| |

+--------------------------------------------------------------------------------------------+



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