Issues with Adtran SBC

[Jhony Perez]

We recently switched from a PRI to SIP Trunks, the provider installed an Adtran SBC, we configured it as an unmanaged gateway. Calls in and out work fine, but a lot of the additional features do NOT work. IE, BLF (Speed dials with presence) would NOT pick up the call. and many other features that all seem to use some kind of transfer.

Do anyone has any tips on how to get the SBC working properly? Or, is there a recommended SBC to use?? 

Thank you all,

[Support]

We use the built in SBC, since 24.01 with TLS / SRTP enabled. 

We have tested it towards something like 15-20 different SIP trunks throughout.

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