Cisco 521SG Administration Guide - Page 121

Configuring SIP, SPCP, and NAT Configuring SIP 4 Configuring a SIP Proxy Server To configure SIP proxy and registration parameters, navigate to Admin Login > advanced > Voice > Ext_n. Under Proxy and Registration, configure the following fields: Parameter Proxy Use Outbound Proxy Outbound Proxy Description SIP proxy server and port number set by the service provider for all outbound requests. For example: 192.168.2.100:6060. The port number is optional. The default is port 5060. The outbound proxy (for example, 172.20.2.1:5060-port is optional) or a domain name, such as sip.server.com, as long as this name is a fully-qualified domain name. When set to no, the Outbound Proxy and Use OB Proxy in Dialog parameters are ignored. Defaults to no. Optionally, the proxy can be configured (Cisco SPA300 or Cisco SPA500 Series only) for Survivable Remote Site Telephony (SRST) support. The proxy is configured with an extension that includes a statically-configured DNS SRV record or DNS A record. Configuring the proxy allows for failover and fallback functionality with a secondary proxy server. For example: For SRV Record: sip.server.com:SRV=node1.sip.server.co m:5060:p=1:w=50|node2.sip.server.com:5 060:p=2:w=50 For A Record: sip.server.com:A=172.20.2.1,172.20.2.2 In both examples Use DNS SRV to no and DNS SRV Auto Prefix are set to no. All outbound requests are sent as the first hop. Enter an IP address or domain name. Cisco Small Business SPA300 Series, SPA500 Series, and WIP310 IP Phone Administration Guide 120