0x2763 Carrier Information
(Interworking Only)

Used in:
0x0033 NPDI Universal ICB

Byte | Description
0, 1 | Tag 0x2763
2, 3 | Length Variable
4 | Value[0] Type of network and network ID plan Bit 7 Spare bit, should always be 0 Bits 6-4 are for type of network ID: 010 national network identification 000 CCITT-standardized identification 111 not sure about whether it is national or CCITT Note that CarrierID parameter is just for ANSI national network (ANSI T1.113-1995, 3.8A), so it should only be set as "010". But the current implementation of IW will translate TNS into universal Carrier ID as well, which may be used in CCITT, so we have to keep "000" and "111" in our usage. Bits 3-0 Network ID plan 0001 3-digit carrier ID 0010 4-digit carrier ID 0000 Carrier ID parameter does not present in the incoming call, that the carrier ID unknown, and this whole parameter is just a void Carrier ID.
5 | Value[1] Circuit number
6 | Value[2] Number of Digits
7 | Value[3] BCD digits pair
8 | Value[4] BCD digits pair

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.
Comité Consultatif Internationale de Telephonique et Telegraphique (now ITU)
American National Standards Institute. ANSI administers and coordinates the U.S. voluntary standardization and conformity assessment system for the
telecommunications industry. More details on these standards may be
viewed at www.ansi.org.
Digital communications link - voice, data, and video at a 1.544 Mbps rate (24 64 Kbps channels)