User guide

System Administrator’s Guide – Release 7.5
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Toll Free 1-866-ALLWORX • 585-421-3850 • www.allworx.com
Revised: April 9, 2013
Page 109
The current address is the IP Address and SIP Protocol port of the Allworx server. This
can be static or updated through periodic SIP Registration. Configure the Enterprise
extensions as follows (using 3-digit extensions):
Enterprise
Extension†
User
User
Extension†
Site
1234 John Doe 108 allworx1
1452 Larry Tate 111 allworx1
4689 Fred Jones 108 allworx2
5999 Jane Smith 177 allworx3
For example, John Doe in New York City dials 84689† to reach Fred Jones. The SIP
INVITE is sent to the central hub with a URI of <sip:4689@centralHubAddress>. The
Central Hub validates the sender’s credentials and looks up 4689 in its databases. It
composes an INVITE with a URI of <sip:108@64.129.42.33:5060> and sends it to
allworx2. Fred Jones answers the phone and the call is established.
Shortly after, John Doe dials 81452† to reach Larry Tate. The SIP INVITE is sent to
the central hub with a URI of <sip:1452@centralHubAddress>. The Central Hub
validates the sender’s credentials and looks up 1452 in its databases. The recipient is
on the same server as the sender (allworx1), so the hub responds with a 300 Redirect
with a Contact header URI of <sip:111@66.64.219.38:5060>. The Allworx server
(allworx1) then initiates a call to extension 111. Larry Tate answers the phone and the
call is established.
To set up Enterprise Dialing:
1. Navigate to the Phone System > Outside Lines page.
2. Either add new SIP Proxy or, if it already exists, click the Modify link the SIP
Proxy that is the target for the Central Hub.
3. Check Proxy is an Enterprise Server under Call Route to indicate the SIP
Server is an Enterprise central server.
4. Click the Update button to save settings. 0.
Note: The steps for configuring and maintaining the SIP centralized server are well
beyond the scope of this document. If you wish to deploy such an arrangement
across sites, it will require detailed knowledge about use and administration of SIP
proxy servers. Contact Allworx customer support for an application note with
additional helpful administration.