Configuring Broadsoft's Shared Phone Line Call Appearance For Survivability - AudioCodes E-SBC User Manual

CHAPTER 37 Advanced SBC Features
In normal operation, when subscribers (such as IP phones) register with the BroadWorks server
through the device, the device includes the SIP Allow-Events header in the sent REGISTER
message. In response, the BroadWorks server sends the device a SIP 200 OK containing an XML
body with subscriber information such as extension number, phone number, and URIs (aliases), as
shown in the example below:
<?xml version="1.0" encoding="utf-8"?>
<BroadsoftDocument version="1.0" content="subscriberData">
<phoneNumbers>
<phoneNumber>2403645317</phoneNumber>
<phoneNumber>4482541321</phoneNumber>
</phoneNumbers>
<aliases>
<alias>sip:bob@broadsoft.com</alias>
<alias>sip:rhughes@broadsoft.com</alias>
</aliases>
<extensions>
<extension>5317</extension>
<extension>1321</extension>
</extensions>
</BroadSoftDocument>
The device forwards the 200 OK to the subscriber (without the XML body). The call flow is shown
below:
The device saves the users in its registration database with their phone numbers and extensions,
enabling future routing to these destinations during survivability mode when communication with
the BroadWorks server is lost. When in survivability mode, the device routes the call to the Contact
associated with the dialed phone number or extension number in the registration database.
➢
To enable the BroadWorks survivability feature:
1. Open the SBC General Settings page (Setup menu > Signaling & Media tab > SBC folder >
SBC General Settings).
2. From the 'BroadWorks Survivability Feature' drop-down list
(SBCExtensionsProvisioningMode), select Enable:
3. Click Apply.
Configuring BroadSoft's Shared Phone Line Call Appearance for
Survivability
The device can provide redundancy for BroadSoft's Shared Call Appearance feature. When the
BroadSoft application server switch (AS) fails or does not respond, or when the network connection
between the device and the BroadSoft AS is down, the device manages the Shared Call
Appearance feature for the SIP clients.
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