Cisco SPA941 Administration Guide - Page 109
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Configuring SIP, SPCP, and NAT Configuring SIP 5 Parameter Description Ans Call Without Reg If enabled, the user does not have to be registered with the proxy to answer calls. Defaults to no. Use DNS SRV Enables DNS SRV lookup for the proxy and outbound proxy. Defaults to no. DNS SRV Auto Prefix Enables the phone to automatically prepend the proxy or outbound proxy name with _sip._udp when performing a DNS SRV lookup on that name. Defaults to no. Proxy Fallback Intvl Sets the delay after which the phone retries from the highest priority proxy (or outbound proxy) after it has failed over to a lower priority server. The phone should have the primary and backup proxy server list via DNS SRV record lookup on the server name. It needs to know proxy priority; otherwise, it does not retry. Defaults to 3600 seconds. Proxy Redundancy Method Select Normal or Based on SRV port. The phone creates an internal list of proxies returned in the DNS SRV records. If you select Normal, the list contains proxies ranked by weight and priority. If you select Based on SRV, the phone uses normal, then inspects the port number based on the first-listed proxy port. Defaults to Normal. STEP 5 Click Submit All Changes. Cisco SPA and Wireless IP Phone Administration Guide 107