0x27AF NPDI SIP Fax Mode

Use this TLV in the following messages:

• Outseize Control (0x002C) and Route Control (0x00E8)
Host managed outseize control and route control. Use as a mandatory TLV in this message.

• PPL Table Download (0x00D6)
Use as a L4-Router TLV in this message.

• Route Control (0x00E8)
L4 managed route control. Use as an optional TLV in this message.

Byte | Description
0,1 | Tag 0x27AF NPDI SIP Fax Mode
2,3 | Length 0x0001
4 | Value[0] 00=Disabled 01= Initiate T.38 re-INVITE 02= Initiate Bypass (PCM) re-INVITE

Tag-Length-Value block. A standardized block that allows data to inserted in a standard way into API messages.
Outgoing call setup during real-time call processing on a specific channel.
A computer, attached to the Excel platform through an RS-232 or Ethernet link, from which you run the telecommunications application that controls the Excel platform.
See Programmable Protocol Language.
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.
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.
See Pulse Code Modulation.