Cisco 521SG Administration Guide - Page 106
Configuring SIP, SPCP, and NAT, Configuring the Cisco Attendant Console, Parameter, Description
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Configuring SIP, SPCP, and NAT Configuring SIP 4 Parameter Description CTI Enable If set to yes, enables the computer telephony integration (CTI), where a computer can act as a call center handling all sorts of incoming and outgoing communications., including phone calls, faxes, and text messages. The CTI interface allows a third-party application to control and monitor the state of a Cisco IP phone and, for example, initiate or answer a call by clicking a mouse on a PC, CTI must be enabled on the Cisco SPA300 Series or Cisco SPA500 Series IP phones for an attached Cisco Attendant Console to properly monitor the IP phone line status. If setting up a Cisco Attendant Console, see Configuring the Cisco Attendant Console. Defaults to no. Caller ID Header Select from where the IP phone gets the caller ID: PAID-RPID-FROM P-ASSERTED-IDENTITY REMOTE-PARTY-ID FROM header Defaults to PAID-RPID-FROM. Not applicable to the Cisco WIP310. SRTP Method The method to use for Secure Real-time Transport Protocol (SRTP): x-sipura-legacy SRPT method s-descriptor-compliant with RFC-3711 and RFC-4568 The default value is x-sipura. Not applicable to Cisco WIP310. Cisco Small Business SPA300 Series, SPA500 Series, and WIP310 IP Phone Administration Guide 105