# 8 Routing VoIP Calls

Overview

Purpose

This chapter provides information to help you configure the CSP to route VoIP calls.

The following basic scenarios are explained in this chapter:

• Routing VoIP calls controlled by SIP and H.323 signaling

• Using the Route Control (0x00E8) message

• Using the Outseize Control (0x002C) message

• Clear Channel VoIP calls (without SIP or H.323 signaling)

For information on routing Time Division Multiplex (TDM) calls, refer to the Call Routing chapter in the Developer’s Guide: Overview.

In this section:

Channel Management PPL Component for VDAC - 0x0061

Routing SIP and H.323 Calls Using Route Control Message

Routing SIP and H.323 Calls Using Outseize Control Message

Routing Clear Channel VoIP Calls

IP Based Routing

Voice over Internet Protocol. The delivery of voice information in digital form in discrete packets rather than in the traditional circuit-committed protocols of the public-switched telephone network (PSTN).
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.
ITU-T standard defines a set of call control, channel setup, and codec specifications for transmitting real-time voice and video over networks that do not offer guaranteed service or quality of service.
Outgoing call setup during real-time call processing on a specific channel.
Signaling technique where the full channel bandwidth is used for data transmission, while the framing and control bits (signaling) use a separate channel. No control or signaling is performed on this path. See B8ZS and ZBTSI.
See Time Division Multiplexing.