Cisco SPA IP Phone Field Reference
SIP Tab
Cisco Small Business SPA300 Series, SPA500 Series, and WIP310 IP Phone Administration Guide 243
B
Random REG CID On Reboot If set to yes, the Cisco IP phone uses a different
random call-ID for registration after the next software
reboot. If set to no, the Cisco IP phone tries to use the
same call-ID for registration after the next software
reboot. The Cisco IP phone always uses a new random
Call-ID for registration after a power-cycle, regardless
of this setting.
Defaults to no.
Mark All AVT packets If set to yes, all audio video transport (AVT) tone
packets (encoded for redundancy) have the marker bit
set. If set to no, only the first packet has the marker bit
set for each DTMF event.
Defaults to yes.
SIP TCP Port Min Specifies the lowest TCP port number that can be
used for SIP sessions. Defaults to 5060.
SIP TCP Port Max Specifies the highest TCP port number that can be
used for SIP sessions. Defaults to 5080.
CTI Enable The CTI interface allows a third-party application to
control and monitor the state of a phone that has
registered with the Cisco SPA 9000. With this interface,
an application can control a phone to initiate an
outgoing call or answer an incoming call with a mouse
click from a PC.
Caller ID Header Provides the option to take the caller ID from PAID-
RPID-FROM, P-ASSERTEDIDENTITY, REMOTE-PARTY-
ID, or FROM header.
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 WIP310.
Parameter Description
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