T38 CTI with 3CX

[nplummer]

UPDATE WITH SOLUTION:

We had modified the standard 3CX provisioning template to include a customized admin password for the phones. This password included a non-alpha character. The older version of 3CX (v11) and the older firmware of the phone were OK with this password, but the newer versions must not like the non-alpha character. Once we changed the setting back to the default provisioning password template and re-provisioned the phone everything worked as it should.

Nepal