Cisco SPA303 Administration Guide

Configuring SIP, SPCP, and NAT
Configuring SIP
Cisco Small Business SPA300 Series, SPA500 Series, and WIP310 IP Phone Administration Guide 114
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Parameter Description
SIP Transport Select from UDP, TCP, or TLS.
Defaults to UDP.
SIP Port Port number of the SIP message listening and transmission
port.
Defaults to 5060.
SIP 100REL Enable To enable the support of 100REL SIP extension for reliable
transmission of provisional responses (18x) and use of PRACK
requests, select yes. Otherwise, select no.
Defaults to no.
EXT SIP Port The external SIP port number.
Auth Resync-Reboot If this feature is enabled, the Cisco IP phone authenticates the
sender when it receives a NOTIFY message with the following
requests:
• resync
• reboot
• report
• restart
• XML-service
To use this feature, select yes. Otherwise, select no.
Defaults to yes.
SIP Proxy-Require The SIP proxy can support a specific extension or behavior
when it sees this header from the user agent. If this field is
configured and the proxy does not support it, it responds with
the message, unsupported. Enter the appropriate header in the
field provided.
SIP Remote-Party-ID To use the Remote-Party-ID header instead of the From header,
select yes. Otherwise, select no.
Defaults to yes.

Cisco SPA303 Specifications

General

Display	Monochrome LCD
Lines	3
Speakerphone	Yes
Headset Jack	Yes (2.5 mm)
Handset	Yes
Ethernet Ports	2 x 10/100 Mbps
Protocol	SIP
Power	Power over Ethernet (PoE) or AC adapter
Audio Codec Support	G.711, G.729
QoS	802.1p/q