This document applies to the following Zenitel and Grandstream devices:
ITSV-2
ITSV-3
GXV3370 (Original product from Grandstream, the ITSV3 device is an OEM of the GXV3370)
GXV3350 (Original product from Grandstream, the ITSV2 device is an OEM of the GXV3350)
The screenshots shown in this document may vary depending on the firmware version of your Zenitel or Grandstream device, but the configuration steps are the same.
This document is based on the following device and firmware: