The hardware on the 45P/Abrivo 924 are identical, the only difference is the software. Software version F.40 and newer (currently F42) will run both The XBLUE and Abrivo telephones.
When updating XBLUE or Abrivo software which is older than F38, you must change the tone chip, which is located on the motherboard in the socket labeled US4, to F10. If this chip is not changed then some tones in the system will appear erratic in their operation.
Stutter Dial tone - The system should not give stutter dial tone on a CO Line regardless of which tone chip is installed. I hate to sound like an engineer but... Is the stutter tone heard when you dial 9 or when you press the CO line directly, or both? Also, if you take SLT port 34 or 35 and loop it back into the system, and press that button do you still hear the stutter dial tone? Finally, I am sure that you tried this, but did you go onto the RJ21X with your test set to see if the stutter tone is coming from the telephone line provider? With that said, some features such as DND will active a station stutter dial tone, but once the CO Line is pressed, that tone should not be heard.
The 45P system is sold under several different names, using the private label program. This allows dealers to build references and equity in their dealership, because now users are recommending your brand and not XBLUE’s. In addition, when the product is googled, only one dealer has your brand.
