Configuring SIP, SPCP, and NAT
Configuring SIP
Cisco Small Business SPA300 Series, SPA500 Series, and WIP310 IP Phone Administration Guide
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Use OB Proxy In Dialog
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.
Register
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.
Make Call Without Reg
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.
Register Expires
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.
Ans Call Without Reg
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.
Use DNS SRV
Enables DNS SRV lookup for the proxy and
outbound proxy. To enable this feature, select
yes
.
Otherwise, select
no
. Defaults to no.
DNS SRV Auto Prefix
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.
Parameter
Description