Not sure if you have this fixed or not.
Depending on where your 9700 system is installed look for the bin directory (ex: D:\MICROS\LES\POS\9700\bin) and run the visadutil.exe file.
From there go to SETUP > DATA PARMS > SETTLEMENT PARMS > ESTABLISHMENT PARMS. You should then see the phone number with 9, simply remove the 9 and ,