Installation guide
Advanced Operational Features
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Configuring the DNS Maximum Cache TTL
Use the following procedure to configure the DNS maximum cache TTL settings.
Configurable Transport Protocol for SIP Services and RTCP Summary
Reports
Parameters have been implemented allowing administrators the ability to independantly configure the transport proto-
cols used by SIP services (e.g. the SIP XML Notify service) and RTCP summary reports. The following parameters are availa-
ble to be defined in the configuration files:
SIP Services
• sip services transport protocol
• sip services port
The above parameters are used to specify the transport protocol and port used for SIP services.
RTCP Summary Reports
• sip rtcp summary reports transport protocol
The above parameter is used to specify the transport protocol used for RTCP summary reports.
Use the following procedure in the configuration files to configure the transport protocol for SIP services and RTCP sum-
mary reports.
Configuration Files
For the specific parameter you can set in the configuration files, see Appendix A, the section, “DNS Maximum Cache TTL Settings” on pageA-231.
Note:
• The parameter "sip symmetric udp signaling" is effective when the transport protocol for RTCP summary reports is
set to be UDP. For more information on symmetric udp signaling, refer to Symmetric UDP Signaling on page 6-23.
• When the SIP transport protocol is set to TCP and the RTCP summary reports transport protocol is set to UDP, if an
outbound proxy is configured, all SIP requests including RTCP summary reports will be sent over TCP.
• In cases where the SIP services transport protocol is the same as the SIP transport protocol or RTCP summary reports
transport protocol, only the SIP services port is enabled (the phone listens on the SIP services port as well as the local
SIP port if they are different [if they are the same, no extra action is needed]).
Configuration Files
For the specific parameter you can set in the configuration files, see Appendix A, the section, “SIP Services/RTCP Summary Reports Transport Protocol
Settings” on pageA-232.