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{{DISPLAYTITLE:Avaya IP Office Trunk Creation}}
 
=Introduction=
This document provides instructions on how to add a SIP Trunk to Avaya IP Office to work with the ProSBC. 
Please visit the following link for more details [https://www.sippysoft.com/ Avaya Support].

=Avaya IP Office SIP Trunk Configuration=

1. First, please ensure that the '''Avaya IP Office SIP Trunk Channels''' license key is available to allow SIP trunking.

[[Image:avaya_license.png|500px]]

2. The '''Avaya IP Office''' LAN settings in this example are shown below. The IP address in the one that was set for the ProSBC NAP as shown in the '''LAN Settings -> IP Address'''. Ensure that '''SIP Trunks Enable''' option is set to allow SIP trunking. Ensure that '''Firewall/NAT Type''' configurations are set to your local requirements.
 
[[Image:avaya_system_settings.png|500px]]

3. The '''Telephony''' settings are öostly use defaults. The '''Inhibit Off-Switch Forward/Transfer''' must be disabled to allow call forwarding or call transferring towards the SIP Trunk of the Avaya IP Office.

[[Image:avaya_telephony_settings.png|500px]]

4. Please ensure that at minimum the G.711 codecs are set and the RFC2833 Default payload value conforms to the one set in the ProSBC Profile 

[[Image:avaya_voip_settings.png|500px]]

5. The ProSBC related SIP Line here is used as follows

[[Image:avaya_sip_settings.png|500px]]

* The '''ITSP Domain Name''' is left blank as this allows using the provided '''ITSP Proxy Address''' field value that will be set in the '''Transport''' tab.
* '''In Service''' must be selected for enabling the '''SIP Line'''.
* '''Check OOS''' is also set for enabling '''SIP Options''' as a keep alive.

6. The '''ITSP Proxy Address''' is set to the ProSBC IP address. You can change the '''Network Configuration''' values or leave as their defaults.

[[Image:avaya_transport_settings.png|500px]]

7. The '''Call Details'' of the ProSBC related SIP line are used as shown below

[[Image:avaya_calldetails_settings.png|500px]]

8. The '''Codec Selection''' is used with a '''Custom''' codec selection.In our example, we used G.711 codec. You can select other codecs too. But you need to be sure the ITSP must support other codecs too. Otherwise, you will need to use a transcoding device. You can select '''Re-Invite Supported''' and other parameters too

[[Image:avaya_codec_settings.png|500px]]

9. '''Short Code''' Section you can configure which codes will passthrough through ProSBC.

[[Image:avaya_shortcode_settings.png|500px]]

10. The '''Incoming Call Route''' entry for the ProSBC is shown next. The dot symbol for the '''Destination''' value matches the '''Incoming Number''' field. In this example this field is blank, so any destination value will match.

[[Image:avaya_incomingroute_settings.png|500px]]