User guide

System Administrator’s Guide – Release 7.5
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Revised: April 9, 2013
Page 105
Caller ID Number Number used for outbound calls. Some ITSPs may ignore this
or refuse calls if set.
Maximum Active Calls The Allworx server uses this number to limit the total number
of the incoming and outgoing active calls with this SIP Proxy.
This is useful for controlling the network bandwidth used, since
Allworx assumes that the SIP proxy is not a LAN local service.
Number of Line Appearances Defines the number of Line Appearances you would like
defined for this Proxy so that Allworx will create a virtual set of
phone lines that mimic real physical analog phone lines on this
service. This is unique to Allworx and enables using ITSP
services in a conventional key system manner. Typically, this
number matches the maximum number of active calls limit set
above, but it can be less.
Note: Set a value of zero if Line Appearance functionality is
not required.
Append Enterprise Prefix to
Dialback number of incoming
calls.
Adds the enterprise dial plan digits (8 by default, *8 for
extension mode) to the beginning of the caller's extension of
an inbound call from a proxy server. This enables automatic
dial back (e.g., selecting a call from the phone's "Calls" list to
contact the original caller) to function properly when the proxy
server requires enterprise dialing for outbound calls.
Send Digits as Dialed Indicate sending outbound numbers exactly as dialed on the
handset placing the call. In most cases, you want the number
converted into NANPA dialing form, so this box is not typically
checked. However, in some cases, the service provider or
proxy may be doing the conversion automatically so you may
want to defeat the Allworx server’s conversion mechanism.
Digits Sent Number of dialed DTMF digits sent to the ITSP when making a
call. If the number specified here is fewer than the number of
digits dialed by the user, only the trailing digits are sent. The
default value (all digits) is typical.
Default Language (requires
the Dual Language Support
feature key)
The choice of languages that will be used for Allworx audio
messages and greetings that are played for inbound calls
through the SIP Proxy.
Default Auto Attendant Select the auto-attendant that should be used when inbound
calls from this Proxy are routed to an Auto Attendant.
Proxy is an Enterprise Server An advanced feature that enables interfacing to external SIP
proxy services that actually have dial plan knowledge of your
local site. In most cases, this feature is not used. See
Enterprise Dialing Feature on page 108, for more information.
Call Routing Determines how calls received from this proxy are routed
inbound to the Allworx server. This is identical to the manner
how all outside lines are configured including analog phone
lines and digital lines.
Advanced Settings*
PAD DTMF RTP packets Typically, smaller than 64 bytes. Some switches and routers
discard any UDP packets shorter than 64 bytes. When