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Overview
- This article describes the configuration and settings necessary for removing Calling Extension/Called Extension in a Transformation Table for ext=xxxx input value.
- This document assumes that PSTN - SBC - Microsoft Lync 20XX setting is completed in following topology.
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Use Case
In some cases, Lync users may be created with a Line URI with tel:+XXXXXXXXXXX;ext=XXXX format as shown below:
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In such situations, when a call is received from the Lync Mediation Server, the INVITE message contains ;ext=xxxx in the Request URI. However, in a LYNC >> SBC >> Tenor call setup, TENOR expects the REQUEST URI without ext=xxxx, therefore
(SBC) will have to remove from the
TO HEADER by using a Transformation Table.
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Subsequently if the above call is placed again, the transformation table will modify the TO header and remove ext=xxxx which then allow call to be successful as shown below:
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