djwk01 schrieb:

Each GSM carrier has eight timeslots. On the first frequency of a cell,
only 7 of those can be used for calls. If the cell has additional
frequencies, all 8 timeslots can be used on them.

So if a cell has 3 carriers, it will have 23 timeslots available for
calls. With standard codecs, you need one timeslot per call, giving you
23 calls. During peak load, the carriers can use half-rate codecs to
squeeze in twice as man calls, at the cost of lower voice quality.

Andreas

Depends upon how many channels are allocated to the cell.
Each channel (200Khz) can have 8 full rate calls in it (There are 8
time slots in the channel), or 16 half rate calls.(I don't know any
carrier who offers half rate).
The 900 Mhz GSM band has 25 Mhz available in each direction (35 Mhz
for E-GSM),
and that is shared among the operating carriers, and further
subdivided because you cannot use the same channel in adjacent cells.
The 1800 and 1900Mhz bands have more space available, and some cells
from some providers user channels in both the 900 and 1800 Mhz band.

IIRC GSM850 is also 25 Mhz each way.

Generally the carrier will put more channels in heavy used cells, and
fewer in less utilized cells.

The number of calls is further reduced by the use of Data
transmission, where more than one of the 8 time slots can belong to a
single phone or PC card.

So there is no clear answer to your question.