Flow Control Negotiation
- Packet size
- Window size
- Extended window size (1996)
Note
| The 1980 recommendation defines maximum Data packet sizes from 32 to 1024 bytes. The 1984 recommendation extends the upper limit to 4096 bytes.
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Adds, removes, or changes flow control parameter values, depending on the requirements of the X.25-class services supporting the connection and the X.25 switch service. For information about flow control parameters, see the "Enabling Flow Control Parameter Negotiation" section of the "Configuring X.25 and LAPB" chapter.
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Throughput Negotiation
- Throughput facility, basic encoding
- Throughput facility, extended encoding (1993)
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Forwards incoming Throughput facilities.
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Closed User Group Selection
- CUG facility, basic encoding
- CUG facility, extended encoding (1984)
- CUG with Outgoing Access facility, basic encoding (1984)
- CUG with Outgoing Access facility, extended encoding (1984)
- Bilateral CUG facility
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Forwards Closed User Group (CUG) selection facilities.
If an interface is configured as a DCE that is subscribed to CUG services, all calls that originated and terminated on the interface will be subject to the requirements of CUG security.
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Reverse Charging
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Forwards the incoming Reverse Charging facility.
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Fast Select
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Forwards the incoming Fast Select facility.
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Internetwork Call Redirection and Deflection (ICRD) Status Selection (1993)
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Forwards the ICRD Status Selection facility.
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Network User Identification (NUID) (1984)
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Forwards the incoming NUID facility.
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Charging
- Charging request (1984)
- Monetary report (1984)
- Segment report (1984)
- Duration report (1984)
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Forwards Charging facilities.
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ROA
- ROA facility, basic encoding
- ROA facility, extended encoding (1984)
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Forwards ROA facilities.
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Called Line Address Modified Notification (CLAMN) (1984)
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Forwards the CLAMN facility.
A router will insert a CLAMN facility in the call confirm if the call was routed through a hunt group.
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Call Deflection Selection (1988)
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Forwards the Call Deflection Selection facility.
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Call Redirection or Call Deflection Notification (CRCDN) (1984)
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Forwards the CRCDN facility.
A router will insert a CRCDN facility in a call that is routed through a hunt group.
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Transit Delay (1984)
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Forwards the Transit Delay facility.
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Marker Facilities, including the following:
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- Local and remote network marker
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Forwards a block of private network facilities preceded by either a local network marker or a remote network maker, presuming that the information following the network marker can be parsed according to the X.25 rules that define encoding for Class A, B, C, and D facilities.
An X.25 interface configured for DDN or BFE can encode facilities behind a local network marker. The X.25 switching service will forward these facilities.
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- ITU-T Specified DTE facilities marker
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An ITU-T Specified DTE facilities marker will be validated according to the facilities defined for the X.25-class service handling the packet.
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