Cisco 521SG - Unified IP Phone VoIP Administration Manual page 234

Cisco SPA IP Phone Field Reference
SIP Tab
Cisco Small Business SPA300 Series, SPA500 Series, and WIP310 IP Phone Administration Guide
Parameter
Random REG CID On
Reboot
Mark All AVT packets
SIP TCP Port Min
SIP TCP Port Max
CTI Enable
Caller ID Header
Description
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.
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.
Specifies the lowest TCP port number that can be
used for SIP sessions. Defaults to 5060.
Specifies the highest TCP port number that can
be used for SIP sessions. Defaults to 5080.
The CTI interface allows a third-party application
to control and monitor the state of a phone that
has registered with the Cisco SPA9000. 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.
Provides the option to take the caller ID from
PAID-RPID-FROM, P-ASSERTEDIDENTITY,
REMOTE-PARTY-ID, or FROM header.
A
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