Cisco SPA IP Phone Field Reference
SIP Tab
Cisco Small Business SPA300 Series, SPA500 Series, and WIP310 IP Phone Administration Guide 258
A
SRTP Method Selects the method to use for SRTP. Two choices
are available:
•x-sipura—legacy SRPT method
• s-descriptor—new method compliant with RFC-
3711 and RFC-4568
The default value is "x-sipura.”
NOTE Not applicable to Cisco WIP310.
Hold Target Before REFER Controls whether to hold call leg with transfer
target before sending REFER to the transferee
when initiating a fully-attended call transfer
(where the transfer target has answered). Default
value is "no,” where the call leg is not held.
NOTE Not applicable to Cisco WIP310.
Dialog SDP Enable When enabled and the Notify message body is
too big causing fragmentation, the Notify
message xml dialog is simplified; Session
Description Protocol (SDP) is not included in the
dialog xml content.
Parameter Description