[asterisk-users] Ghost calls on PBX

[Mike Diehl]

Hi all,

I have a user with an old Mitel PBX connected to a couple of SPA112's.  The
user is reporting that their phones ring several times a day and when they
answer the "call," all they hear is dial tone or busy signal.

Their PBX guy says that the SPA112's aren't providing line supervision and
the PBX requires it.

Does anyone know how to fix this?  I'd also like to fix it from a
provisioning file, if possible.

Thank you!

Mike.
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