0x2915 NPDI SIP Response Code

This TLV provides the response code received for any SIP message generated by the CSP.

Used in:
0x0033 NPDI Universal ICB in:
Channel Released with Data message
Release Channel with Data message
PPL Event Indication message
Request for Service with Data message

Byte | Description
0, 1 | Tag 0x2915
2, 3 | Length 0x0002
4, 5 | Value SIP Response Code (2 Bytes) This TLV, when reported in the PPL Event Indication for Event (0x0027/0x0028), will have any valid SIP Response value. The response code to be interpreted for event 0x0027 is as follows: 202 - Accepted (The REFER request is successful) 405 – Method Not Allowed (REFER request failed) 408 – Request Timed Out (REFER request failed) The response code to be interpreted for event 0x0028 is as follows: 100 – Trying 200 - OK (The reference is successful) 503 - Service Unavailable (The reference failed) 603 - Decline (The reference failed)

Tag-Length-Value block. A standardized block that allows data to inserted in a standard way into API messages.
Session-Initiation Protocol. A signaling protocol used for establishing sessions in an IP network. A session could be a simple, two-way telephone call, or it could be a collaborative multi-media conference session.
Network Protocol Data Intelligence. Also called “Interworking,” it is a software product that operates within Excel’s Call Control (Layer 4) and Services (Layer 5) call processing layers. NPDI is meant to enhance Excel’s call processing product offering by allowing call processing layers (specifically Layers 4 and 5) to perform advanced analysis, generation, and conversion of Network Signaling (NS) Layer 3 information.
See Information Control Block.
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.
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.