0x2931 NPDI SIP Contact Expires

This TLV defines the seconds remaining before the Contact expires.

Used in:
0x0033 NPDI Universal ICB in:
Request for Service with Data message

Byte | Description
0, 1 | Tag 0x2931
2, 3 | Length 0x0004
4-7 | Value [0-3] Variable

Tag-Length-Value block. A standardized block that allows data to inserted in a standard way into API messages.
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.