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L3P B Channel Control (0x0007) Atomic Functions

This section describes the atomic functions used by the L3 Call Reference PPL component.

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L3P B Channel Control atomic functions

The following AFs are specific to the ISDN L3P B Channel Control PPL component. See Common Atomic Functions for the AFs common to all PPL components.

AF Number | 51
Name | Send Enable B Channel to L3
Description | Enables a B channel to Layer 3 and forces the SERVICE of in-service to be sent to the distant end.
Arg1 | <Not Used>
Arg2 | <Not Used>

AF Number | 52
Name | Send Disable B Channel to L3
Description | Enables a B channel to Layer 3 and forces the service of Out-of-Service to be sent to the distant end.
Arg1 | <Not Used>
Arg2 | <Not Used>

AF Number | 53
Name | Send L3 B Channel Maintenance to L3
Description | Enables a B channel to Layer 3 and forces a service of maintenance to be sent to the distant end.
Arg1 | <Not Used>
Arg2 | <Not Used>

AF Number | 54
Name | Send CCSM Service State Event
Description | Forces an indication to Layer 4 and causes a DS0 Status Change message to be sent to the host.
Arg1 | <Not Used>
Arg2 | <Not Used>

AF Number | 55
Name | Test to see if the B channel is on the D channel Facility
Description | Checks to see if the B channel for this PPL resides on the same span as any other D channel (primary or backup).
Arg1 | <Not Used>
Arg2 | <Not Used>

AF Number | 56
Name | Send Remove Call to L3P CR
Description | Remove Call is sent to L3P CR
Arg1 | <Not Used>
Arg2 | <Not Used>

See Programmable Protocol Language.
Bearer channel, 64Kbps (ISDN) The channel that carries the actual payload (as opposed to D-channels, which carry signaling data that helps route the payload).
See Integrated Services Digital Network.
See Atomic Function.
Protocol layer of the CSP.
The condition of a component at a given instant. The current "context" of a PPL object, such as Idle, Seizing, Answered. In PPL files, a State is represented by a circle.
Call processing layer of the CSP.