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L3P Link (0x0010)

This section documents the atomic functions associated with L3P Link Control.

Atomic Functions

AF Number | 51
Name | Send Activate Link Request to MTP3
Description | Requests that a signaling link be activated. This attempts to bring the signaling link up, through the initial alignment procedure, to an In Service state at MTP2. This does not necessarily mean that the link is available for user traffic at MTP3 because the signaling link’s inhibited status is independent of its active status.
Arg1 | <Not Used>
Arg2 | <Not Used>

AF Number | 54
Name | Send Deactivate Link Request to MTP3
Description | Requests that a signaling link be deactivated. This brings the signaling link to an inactive state at MTP2. If the signaling link was previously available at MTP3, it becomes unavailable.
Arg1 | <Not Used>
Arg2 | <Not Used>

AF Number | 55
Name | Send Inhibit Link Request to MTP3
Description | Requests to inhibit a signaling link. An inhibited signaling link is not usable at MTP3 for user traffic. Inhibiting a signaling link does not affect its MTP2 state.
Arg1 | <Not Used>
Arg2 | <Not Used>

AF Number | 56
Name | Send Uninhibit Link Request to MTP3
Description | Request to uninhibit a signaling link.
Arg1 | <Not Used>
Arg2 | <Not Used>

AF Number | 57
Name | Send L5 PPL Event Indication Message with Data
Description | Sends a PPL Event Request message to the host with data.
Arg1 | <Event ID> 1 - Remote Inhibit, the signaling link has been inhibited from the remote signaling point. 2 - Remote Uninhibit, the signaling link has been uninhibited from the remote signaling point. 3 - Local Inhibit Denied, a local request to inhibit a signaling link has been denied, possibly due to local or remote conditions. 4 - Local Inhibit Timeout, a local request to inhibit a signaling link has timed-out. 5- Local Inhibit, the local request to inhibit a signaling link was successful. 6 - Local Uninhibit, a local condition has caused a signaling link to become uninhibited. 7 - Uninhibiting Not Possible, a request to the remote signaling point to uninhibit a signaling link was unsuccessful. 8 - Uninhibit Timeout, a request to the remote signaling point to uninhibit a signaling link has timed-out. 10 - Link Activated, the signaling link has become active (In Service at MTP2). 11 - Link Dead, the signaling link is not framed properly at the physical layer (Layer 1). 12 - L5 OOS, this acknowledges a Service State Configure message from the host that results in the signaling link going from the L3P active state to the L3P "L5 OOS, L1 Alive" state. A Service State Configure message to bring L5 to the OOS state also causes the link to be deactivated.
Arg2 | <Event Data> The event data is always the normal state of the PPL component: 0 - L5 OOS and L1 Dead 1- L5 OOS and L1 Alive 2 - L5 In Service and L1 Dead 3 - L5 Alive and L1 Alive

AF Number | 58
Name | Send L5 a Message Response
Description | Generates a PPL Event Request Positive ACK to the host.
Arg1 | <Status Value> 0x10 - Positive ACK
Arg2 | <Not Used>

See Atomic Function.
Message Transfer Part level 3 - network level
Message Transfer Part level 2 - data link level
See Programmable Protocol Language.
A condition that, when met, drives a state machine from one state to another. A condition that drives a Component out of its current state by invoking an associated primitive.
Out of Service
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.
In PPL, a condition that, when met, drives a state machine (PPL Component) from one state to another, by invoking an associated Primitive. In PPL files, an Event is marked by an arrow and text.
Positive acknowledgment to a message