Cisco SPA8000-G1 Administration Guide - Page 32
Introducing Cisco Small Business Analog Telephone Adapters, ATA Voice Field Reference, - ring back
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Introducing Cisco Small Business Analog Telephone Adapters ATA Software Features 1 Feature Description Calling Party Control Calling Party Control (CPC) signals to the called party equipment that the calling party has hung up during a connected call by removing the voltage between the tip and ring momentarily. This feature is useful for autoanswer equipment, which then knows when to disengage. CPC is configured in the Regional, Line, and PSTN Line tabs. See "ATA Voice Field Reference," on page 115. Report Generation and Event Logging The ATA device reports a variety of status and error reports to assist service providers to diagnose problems and evaluate the performance of their services. The information can be queried by an authorized agent, using HTTP with digested authentication, for instance. The information may be organized as an XML page or HTML page. Report Generation and Event Logging are configured in the System, Line, and PSTN Line tabs. See "ATA Voice Field Reference," on page 115. Syslog and Debug Server Records Syslog and Debug Sever Records log more details than Report Generation and Event Logging. Using the configuration parameters, the ATA device allows you to select which type of activity/events should be logged. Syslog and Debug Server allow the information captured to be sent to a Syslog Server. Syslog and Debug Server Records are configured in the System, Line, and PSTN Line tabs. See "ATA Voice Field Reference," on page 115. SIP Over TCP To guarantee state-oriented communications, you can choose TCP as the transport protocol for SIP. This protocol is "guaranteed delivery", which assures that lost packets are retransmitted. TCP also guarantees that the SIP packages are received in the same order that they were sent. As a result, TCP overcomes the main disadvantages of UDP. In addition, for security reasons, most corporate firewalls block UDP ports. With TCP, new ports do not need to be opened or packets dropped, because TCP is already in use for basic activities such as Internet browsing or e-commerce. SIP over TCP is configured in the Line tabs. See "ATA Voice Field Reference," on page 115. This feature applies to SPA2102, SPA3102, and SPA8800. Cisco Small Business ATA Administration Guide 32