IP Connection Management

To establish an IP connection, you use the Route Control (0x00E8) or Outseize Control (0x002C) message.

To establish a two-way connection, use the Route Control message with the following TLVs:

There may be situations where a one-way IP connection is needed. For example, if Gateway A wants to reserve an IP address and an RTP port, it may establish one side of an IP connection with a one-way listen only. To establish the other side of the IP connection, IP Network Interface Series 2 card A then sends a request, with the IP address and the RTP port just reserved, to Gateway B.

Upon receiving the request, Gateway B establishes a two-way IP connection and sends Gateway A the IP address and the RTP port that it reserved for the connection. In turn, IP Network Interface Series 2 card A changes the current one-way listen only connection to a full two-way connection.

To establish a one-way connection, use the Route Control (0x00E8) message and include the Universal ICB with the Source IP Address and Source Port Number TLVs. If the source IP address/port number TLVs are missing, an error is returned.

To establish a Receive-only connection, use the Route Control (0x00E8) message with the following TLVs:

00 43 00 e8 00 00 ff 00 01 29 02 ff fe 03 03 00 33 00 12 00 02 27 92 00 04 0a 0a 24 15 27 93 00 04 00 00 00 01 02 1e 13 00 03 00 13 00 02 00 06 00 06 00 02 00 01 00 0f 00 01 0b 02 1e 07 00 01 01 db 00 01 01

To establish a Transmit Only connection, use the Route Control (0x00E8) message with the following TLVs:

02 1e 13 00 03 00 13 00 02 00 06 00 06 00 02 00 01 00 0f 00 01 0b (Router ICB) 02 1e 07 00 01

Figure 3-4 IP Network Interface Series 2 Card Connection - Transmit-only Connection

Internet Protocol. Part of the TCP/IP family of protocols used to route messages and tracks the addresses of nodes.

Outgoing call setup during real-time call processing on a specific channel.

A 32-bit address, used in IP routing, which includes a Network address identifier assigned by a central authority and a Host ID (an end station identifier assigned by a LAN administrator).

Real-Time Transport Protocol. Supports transport of real-time data like interactive voice and video over packet-switched networks.

The point in the Excel platform where a DS0 connects to a network. Also known as a "socket."

A device that translates calls between an IP network and another network, typically the PSTN.

See Information Control Block.

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.

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