They seemed like actual cell calls.
One was a guy using his month old Solo phone calling customer service, also heard someone call their voicemail. Some of the freq I can recall off the top of my head are 420.250, 420.3750, 420.400, 420.675.
Wirelessly posted (BlackBerry9700/22.214.171.1244 Profile/MIDP-2.1 Configuration/CLDC-1.1 VendorID/332)
Doesn't Northwest Tel still run the Autotel network in BC?