If you are using a GSM 900/1800 network for internet access
what are the
optimal bandwidth qualities, and what are the bandwidth qualities of
existing UMTS networks?
I don't know if I really understand your questions. If you connect with
appropriate modem/device you should be able to get the following
channel bandwidth for data applications.:
2+ = GSM Phase 2+
GSM CSD = GSM Circuit Switched Data (14.4kbps * n)
GPRS = General Packet Radio System Data (up to 164 kbps)
EDGE = Enhanced Data GSM Environment (up to 560 kbps)
UMTS = Universal Mobile Telephone Service (up to 2 Mbps but only
in a micro cell.)
Cheers,
--brijesh