Linksys WIP310 SPA500 Series and WIP310 IP Phone Administration Guide - Page 115

Configuring SIP, SPCP, and NAT Configuring SPCP on the Cisco SPA 50XG 4 Configuring SPCP on the Cisco SPA 50XG The Cisco SPA 50XG can be used as part of a Cisco Unified Communications System. This system uses SPCP (also called SCCP) for call control features. To configure SPCP on the Cisco SPA 50XG: STEP 1 Log in to the web administration interface. STEP 2 Click Admin Login and advanced. STEP 3 Click the System tab. STEP 4 Under System Configuration, in the Signaling Protocol field, choose SCCP. STEP 5 (Optional) To configure the phone to automatically detect the protocol being used on the network to which it is connected, in the SPCP Auto-detect field, choose yes. STEP 6 Click Submit All Changes. NOTE For the Cisco SPA501G, can be configured using the IVR. See the "Using IVR on the Cisco SPA 501G IP Phone" section on page 17. Network Address Translation (NAT) and Cisco IP Phones NAT is a function that allows multiple devices to share the same public, routable, IP address to establish connections over the Internet. NAT is present in many broadband access devices to translate public and private IP addresses. To enable VoIP to co-exist with NAT, some form of NAT traversal is required. Cisco SPA 500 Series and WIP310 IP Phone Administration Guide 104