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Dynamic Connection Management

Introduction

To modify an existing connection, use the Resource Attribute Configure message with various combinations of TLVs.

Change Destination Only

To change the destination of the connection without changing the Connection Mode, send a Resource Attribute Configure message with the following TLVs:

• Address Element TLV

• Destination IP Address

• Destination RTP Port Number

Change Connection Mode

To change the Connection Mode, include the Connection Mode TLV. To also change the destination, enter the new Destination IP Address and RTP Port Numbers in the corresponding TLVs. To maintain the existing destination, enter the original destination information.

• Address Element TLV

• Destination IP Address

• Destination RTP Port Number

• Connection Mode

Use the Connection Mode TLV only when you want to modify a connection without changing the destination address. To modify a connection to a new destination, include the Destination IP Address and Destination RTP Port Number TLVs.

In hold mode, no voice path is transmitted or received.

Important! You cannot modify the source IP address or RTP port of an existing connection. If you use the Source IP Address/RTP Port Number TLVs, the CSP returns an error and the connection remains unchanged.

Change Destination Only

To modify the destination of an existing connection, use the Resource Attribute Configure message with the following TLVs:

• Address Element TLV

• Destination IP Address TLV

• Destination RTP Port Number TLV

Example Message

00 2a 00 e3 00 00 ff 00 01 01 01 04 00 04

00 09 00 05 0d 03 00 01 00 (Address Element TLV)

27 94 00 04 0a 0a 24 16 (Destination IP Address TLV)

27 95 00 04 00 00 00 01 (Destination RTP Port TLV)

Figure 2-7 Change Destination Only

Change Connection Mode Only

To modify the Connection Mode of an existing two-way connection to listen-only, use the Resource Attribute Configure message with the following TLVs:

• Address Element TLV

• Connection Mode TLV; Receive-only

Example Message

00 1a 00 e3 00 00 ff 00 01 01 01 04 00 02

00 09 00 05 0d 03 00 01 00 (Address Element TLV)

01 db 00 01 01 (Connection Mode TLV)

Figure 2-8 Change Connection Mode Only

Change Destination and Connection Mode

To change an existing listen-only connection to a two-way connection with a new destination, use the Resource Attribute Configure message with the following TLVs:

• Address Element TLV

• Destination IP Address TLV

• Destination RTP Port Number TLV

• Connection Mode TLV (Two-way)

Example Message

00 2a 00 e3 00 00 ff 00 01 01 01 04 00 04

00 09 00 05 0d 03 00 01 00 (Address Element TLV)

27 94 00 04 0a 0a 24 16 (Destination IP Address TLV)

27 95 00 04 00 00 00 01 (Destination RTP Port TLV)
01 db 00 01 02 (Connection Mode TLV)

Figure 2-9 Change Destination and Connection Mode

The information in an AIB that follows the header, down to the data field. An AIB can have one or more Address Elements. AEs correspond to Span, Channel, and SS7 Link.
Tag-Length-Value block. A standardized block that allows data to inserted in a standard way into API messages.
Internet Protocol. Part of the TCP/IP family of protocols used to route messages and tracks the addresses of nodes.
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 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).