When using an OBi device to connect to an alarm panel, we recommend the use of In-Band DTMF
. Please note that modifying this parameter alone may not make for a successful use of the OBi + VoIP with the alarm system as there may be other factors outside the capability of the alarm system that make use of a VoIP service impossible.
To make this configuration modification, use the OBi Expert Configuration pages (found on the www.obitalk.com
Device Configuration page).
Navigate to the ITSP Profile (A-D) -> General settings being used for the VoIP account connected to the alarm. Set the DTMFMethod parameter to "InBand."