0x27B3 NPDI RTP Connection Mode

This TLV block allows you to set the connection mode. A line can be connected to receive only, transmit only, or both.
Used in:
0x0033 NPDI Universal ICB in:
Route Control message
Outseize Control message

Do not confuse this TLV with TLV 0x01DB, which is the regular resource attribute TLV for RTP Connection Mode. Tag 0x27B3 is the RTP Connection Mode in NPDI format.

Byte | Description
0, 1 | Tag: NPDI RTP Connection Mode (0x27B3)
2, 3 | Length: 0x0001
4 | Value[0] 0x00 Two-way connection 0x01 One-way listen/receive only 0x02 One-way talk/transmit only 0x03 Hold Mode

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.
Outgoing call setup during real-time call processing on a specific channel.
Real-Time Transport Protocol. Supports transport of real-time data like interactive voice and video over packet-switched networks.