Motorola IHF1000 and Cingular razr incomp

Hello All, I own and Run a Cellular installation company in NY and have Installed hundreds of IHF1000 's for many bluetooth phones. This kit, by far, is the best kit for voice quality, as well as speach recognition, available.

Recently I have gotten aprox 10 cals from people who are telling me that when they are on the phone in the car, and another call comes in, on call waiting, as soon as the 2nd call goes to voicemail, the original call is dropped, yet the phone still says "connected" untill you turn off the ignition or press and hold the green button to sever the connection of the phone and kit.

I went and checked out 2 of these  vehicles, both using Cingular razrs. I paired my e815 and recreated the situation and No problems. @nd call went to voice mail and I didn't get cut off on the 1st call.I than linked it to my I870 Nextel, still no problem.

I spent time speaking to the know nothings"" at 1877motoblu. they told me it was the software on the kit. I brought 2 new kits out to the site and swapped them, still the same. Back on the phone with Moto. they say its the software on the phone. My customer got 2 brand new phones from the store and still the same problem.

I have instructed my customers to either say goodbye to the first call before it says good bye anyway, or disconnect from the kit, hit ignore call, and then reconnect to the kit. This is great vbut the law here is "no phone in your hand while opperating a motor vehicle"

I am just looking for some input because motorola had 2 answers and now they are all out. I hope that this forum can help me.

thanks in advance.

Rich