OREANDA-NEWS. On 04 June 2008 was announced, that in the third quarter of 2008, CT JSC “Baikalwestcom”, affiliate company of “Sibirtelecom” OJSC plans to put into operation EV-DO Revision A protocol within CDMA network standard, which the operator currently develops in Irkutsk region under “Wellcom” brand. Thus, “Baikalwestcom” will become the first operator on the territory from the Urals up to the Far East, implementing the said technology: a number of operators located in western part of Russia have been already utilizing it.

The main difference of Revision A version from EV-DO basic protocol lies in higher speed of importation and transfer of data: up to 3,1 Mbit/sec. (direct channel) and up to 1,8 Mbit/sec. (reverse channel). EV-DO basic version, now available through the whole range of coverage of Wellcom network, demonstrates the following characteristics: PCR reaches 2,4 Mbit/sec. (direct channel) and 150 Kbit/sec. (reverse channel). Operating rate in Irkutsk, the city residing the majority of CDMA subscribers, varies according to time of use: from 540 Kbit/sec. up to 1 Mbit/sec. (direct channel) and 100 Kbit/sec. in reverse channel. Thus, transfer rate in reverse channel of EV-DO protocol basic version is sometimes not sufficient for major VPN networking. Introduction of Revision A version solves this problem: subscribers will get an opportunity to create VPN-networks (which seems rather actual for those, whose business objects locate far from each other or beyond wireline networks) and more efficient work with office applications, including e-mail.

Besides, the said technology supports implementation of some important functions like Transcorder Free Operation, providing voice communication of higher quality by means of arrangement of point-to-point communication of voice information through the whole network. Revision A makes it possible to introduce new services for subscribers like visual communication and mobile TV.

“Baikalvestcom” will expand EV-DO Revision A protocol in try&buy mode: first of all the equipment passes operational testing and only then a decision about its final configuration is adopted. Huawei Technologies is a traditional producer of equipment for Wellcom network. Irkutsk, Angarsk and Bratsk – these are the first cities for entering coverage area of this new technology. 

Activities connected with usage of EV-DO basic technology will also be available for existing and new subscribers: there is no need to change the device or modem for continuing operations in the network. For those, who plan connecting with the help of Revision A, “Baikalwestcom” suggests a range of telephone sets and modems, supporting this protocol.