David Lesher writes:

Greg Rose sez:

...

The three different digital standards in North America are TDMA, CDMA, and GSM (in NY and DC only AFAIK). Newer analog phones use at least some of this, but I don't know much about them.

? I always thought GSM was a specific application of TDMA...

Technologically, GSM *is* a kind of time division multiple access, but the term "TDMA" as I used it is meant to apply to North American IS-128(?) compliant things. They are definitely not interoperable. Greg. Greg Rose INTERNET: ggr@Qualcomm.com Qualcomm Australia VOICE: +61-2-9743 4646 FAX: +61-2-9736 3262 6 Kingston Avenue homepage. Mortlake NSW 2137 35 0A 79 7D 5E 21 8D 47 E3 53 75 66 AC FB D9 45