White Paper V600

Handover in the V600

This phone is compliant with the 3GPP R99 December 2002 release.

GSM to UMTS

The product supports circuit switched voice handover from GSM to UMTS.

UMTS to GSM/GPRS

The product supports packet switched data handover and circuit switched voice handover from UMTS to GSM/GPRS.

GPRS

The introduction of GPRS was a big step in the evolution of the GSM networks for enhancing the capabilities of data communication. Data traffic has increased (over both wired and wireless networks), with the growth in demand for Internet access and services paralleling that of mobile communications.

We can now see that the demand for high-speed Internet access is the key driver for coming generations of wireless multimedia and entertainment services, and GPRS is important as a stepping stone when we enter the 3G network era. GPRS has allowed innovative services to be created and granted access to new and previously inaccessible market segments, which will be further developed with 3G.

GPRS is able to take advantage of the global coverage of existing GSM networks. Applications developed for GPRS have been deployed on a large scale and have thus reaped the associated benefits.

With GPRS, the V600 sends data in “packets” at a very high speed. The phone remains connected to the network at all times, using transmission capacity only when data is sent or received.

Instead of occupying an entire voice channel for the duration of a data session, the V600 sends and receives data in small packets, as needed, much like IP on the Internet. Thanks to this, the phone is always online, using transmission capacity only when data is sent or received. The V600 is compatible with GPRS R99.

The GSM system limits the ability to use all eight time slots, so the V600 uses up to four time slots for receiving data, and up to one slot for transmit- ting.

Information about the identity of the phone and the characteristics of the connection are described in the PDP (Packet Data Protocol) context. This information is stored both in the phone and in the mobile network, so that each phone is identified and “visible” to the system.

Using GPRS with the V600 has many advantages, for example:

•Constant connection

Keep an open connection to an email system or the company network, staying online to receive and send messages at all times. All connection settings can be managed by using the data connections feature.

•High speed

Gain access automatically to increased band- width when downloading large files, images etc.

•Cost efficient

Use transmission capacity only when needed, thus reducing costs.

•WAP over GPRS

Access the Internet via WAP at high speed and with a constant connection.

•Email over GPRS

Remain connected to an email system while reading and preparing messages, (which are then sent at high speed).

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August 2005