Telecommunications - Configuration of X.25 Fast Select Acceptance

 

Subscription Option - Fast Select Acceptance

Description of Option

Is an optional user facility agreed for a period of time. This facility if subscribed to, authorises the network to transmit to the DTE incoming calls which request the fast select facility.

DTEs can request the fast select facility on a per call basis by means of an appropriate facility request.

The fast select facility allows the call request, call connected and clear packets to contain upto 128 bytes of user data.

A restricted fast select facility restricts the called party to sending a clear only.

A CCITT 1984 enhancement is that: 'converted calls' (ie non restricted calls which have exchanged data) can have upto 128 bytes of data in the clear packet.

Support:

X.2 LEVEL 3 PER USER SUBSCRIPTION X.2 (1984) UK(a) UK(b) interworking
OPTIONS REF CLASS now now R5a R5b R6
Fast select acceptance 1.20 E
Fast select CCITT84 enhancement . . . .

| Fast select acceptance..............| 1.20 E |

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| # | Fast select CCITT84 enhancement.....| |

Already supported.

table build question:

TNDTED Q157(was q41 ) accept incoming fast select calls (YES/NO)

|TNDTED Q157| q41 | accept incoming fast select calls...#default = NO

TNDTED Q160(was q44 ) originate fast select calls (YES/NO)

|TNDTED Q160| q44 | originate fast select calls.........#default = NO

From Public Network (rel 3.52) onward 'converted calls' (ie non restricted calls which have exchanged data) can have upto 128 bytes of data in the clear packet.

*** note need to check if fast select and enhanced DTE are independent ***

Public Network customers who subscribe to fast select are also given 'extended format' facilities.


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