Cisco SPA2102-SF Administration Guide - Page 75

Configuring Voice Services SIP Trunking and Hunt Groups on the SPA8000 4 SIP Trunking and Hunt Groups on the SPA8000 The SPA8000 supports SIP Trunking, which allows you to connect a traditional PBX to VoIP services. In this configuration, calls go through the ITSP rather than the PSTN, yet the call routing functionality is similar to that of traditional PSTN lines. You can configure up to four trunk groups for the purpose of inbound call routing and outbound caller identification. You can configure a trunk number on the SPA8000, such that an incoming call automatically rings the grouped lines simultaneously or in a specified order. For outbound calls, SIP Trunking ensures that all calls on a trunk line can be identified by the trunk number and a common caller ID. This feature helps you to ensure that calls are directed to available lines and that work groups such as sales teams can work together to answer calls. In addition, teams can project a common identity when placing outbound calls on a trunk. This section provides information about SIP trunking and explains how to configure your trunk groups. Refer to the following topics: • "About SIP Trunking," on page 76 • "Setting the Trunk Group Call Capacity," on page 78 • "Inbound Call Routing for a Trunk Group," on page 78 • "Contact List for a Trunk Group," on page 79 • "Outgoing Call Routing for a Trunk Group," on page 81 • "Configuring a Trunk Group," on page 82 • "Additional Notes About Trunk Groups," on page 85 • "Setting the Hunt Policy," on page 85 • "Trunk Group Management," on page 83 Cisco Small Business ATA Administration Guide 75