Cisco 521SG Administration Guide - Page 103

Configuring SIP, SPCP, and NAT Configuring SIP 4 Configuring SIP SIP settings for the Cisco SPA IP phones are configured for the phone in general and for individual extensions. Configuring Basic SIP Parameters To configure general SIP parameters, navigate to Admin Login > advanced > Voice > SIP. Under SIP Parameters, make these changes: Parameter Description Max Forward The number of proxies or gateways that can forward the request to the next downstream server. The Max-Forwards value is an integer in the range of 0 to 255 indicating the remaining number of times the request message is allowed to be forwarded. This count is decremented by each server that forwards the request. The initial value is 70. Max Redirection Number of times an invite can be redirected to avoid an infinite loop. The default is 5. Max Auth Maximum number of times (from 0 to 255) a request might be challenged. The default is 2. SIP User Agent Name User-Agent header used in outbound requests. The default is $VERSION. If empty, the header is not included. Macro expansion of $A to $D corresponding to GPP_A to GPP_D allowed. SIP Server Name Server header used in responses to inbound responses. The default is $VERSION. SIP Reg User Agent Name User-Agent name used in a REGISTER request. If not specified, the SIP User Agent Name is used for the REGISTER request. SIP Accept Language The preferred languages for reason phrases, session descriptions, or status responses carried as message bodies in the response. If blank, the header is not included and the server assumes that all languages are acceptable to the client. Defaults to blank. Cisco Small Business SPA300 Series, SPA500 Series, and WIP310 IP Phone Administration Guide 102