P800/P802
White Paper, January 2003
The capacity of each timeslot depends on the network and four coding schemes are defined, CS- 1 to
| 9.05kbps | ||||
Rx |
| 36.2 | 53.6 | 62.4 | 85.6 |
Tx |
| 9.05 | 13.4 | 15.6 | 21.4 |
The diagram below shows how the P800 in GPRS mode will send data in packets, combining timeslots when extra bandwidth is required, up to a maximum of 4 for received data and 1 for transmitted data
Applications such as Messaging and the integrated browser will automatically initiate CSD, HSCSD and GPRS connections, warning you if your desired action requires another connection to be cut. Whilst a CSD/HSCSD connection is terminated after the transaction or a period of inactivity, the GPRS connection will be maintained. This means that, for example, Web and WAP pages may be browsed without any connect delay, and that the
When using the P800 as a modem to a PC, the GPRS connection is initiated from the PC as usual by selecting a Windows DUN connection, either explicitly within the DUN folder or implicitly via the usual way that Windows enables applications to request connections. Where a GPRS connection is defined in the DUN entry, the P800 will initiate a GPRS attach and connect to the GPRS network.
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