0x294A - NPDI SIP Extensions

Used in:
Request for Service
PPL Event Indication message

Byte | Description
0, 1 | Tag 0x294A
2,3 | Length 0x0004
4-7 | Value This field is a 32-bit mask. Each bit selects specific SIP Extension SIP message fields and is listed from LSB to MSB. 0 - Disable 1 - Enable Supported header tags Bit 0 - Timer Bit 1 - 100rel (PRACK) Bits 2-15 - Reserved Required header tags Bit 16 - Timer Bit 17 - 100rel(PRACK) Bits 18-31 - Reserved

See Programmable Protocol Language.
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.
Least Significant Bit
Most Significant Bit