Cisco SPA301 Administration Manual page 138

Configuring SIP, SPCP, and NAT
Configuring SIP
Cisco Small Business SPA300 Series, SPA500 Series, and WIP310 IP Phone Administration Guide
Parameter
Use OB Proxy In Dialog
Register
Make Call Without Reg
Register Expires
Ans Call Without Reg
Use DNS SRV
DNS SRV Auto Prefix
Description
SIP requests are sent to the outbound proxy within
a dialog. This field is ignored if Use Outbound
Proxy is set to no, or Outbound Proxy is blank. To
enable this feature, select yes. Otherwise, select
no. Defaults to yes.
Enables periodic registration with the proxy. This
parameter is ignored if a proxy is not specified. To
enable this feature, select yes. Otherwise, select
no. Defaults to yes.
Enables making outbound calls without successful
(dynamic) registration by the phone. If set to no, the
dial tone plays only when registration is successful.
To enable this feature, select yes. Otherwise, select
no. Defaults to no.
Defines how often the phone renews registration
with the proxy. If the proxy responds to a REGISTER
with a lower expires value, the phone renews
registration based on that lower value instead of the
configured value.
If registration fails with an "Expires too brief" error
response, the phone retries with the value specified
in the Min-Expires header of the error.
The range is from 0 to 268435455. Defaults to 3600
seconds.
The user does not have to be registered with the
proxy to answer calls. To enable this feature, select
yes. Otherwise, select no. Defaults to no.
Enables DNS SRV lookup for the proxy and
outbound proxy. To enable this feature, select yes.
Otherwise, select no. Defaults to no.
The phone automatically prepends the proxy or
outbound proxy name with _sip._udp when
performing a DNS SRV lookup on that name. To
enable this feature, select yes. Otherwise, select
no. Defaults to no.
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