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Dial-in

The Dial In service is a simple and cheap way of connecting to Telefónica O2 Czech Republic’s data network of by means of X.28 and X.25 (X.32) protocols. Connection to the network is possible by dialing the telephone number of the Dial In service from any location.

What the service offers

The service provides simple access to many applications and information databases. At the same time, it is possible to use the service interconnection individual branch offices with their headquarters, for communication with customers and/or suppliers, and to set up a cashless payment system with a bank.

Target users

The Dial In service is a suitable solution for users that have lower demands in terms of their volume of transferred data, or with only an occasional need for communication.

Service benefits

  • easily available and flexible access to data network via the public telephone network or a mobile telephone network
  • wide range of supported speeds
  • possibility to choose the access protocol and speed according to the user's modem
  • low acquisition as well as operating costs (in the case of lower volumes of transferred data this service is more favorably priced than other services, such as Direct or Frame Relay)
  • service availability throughout the Czech Republic.
  • non-stop supervision of the network, HelpDesk (24 hours a day, seven days a week)

Connection to other services

Together with other Telefónica O2 Czech Republic services, the Dial In service provides a comprehensive solution with high utility value. The data network enables Dial In connections to communicate with connections of the Direct and Dir-is services as well as with foreign data networks. In combination with the Direct and Dir-is services, the Dial In service enables the users to optimize their monthly fee in relation to the volume of transferred data.

Pricing

The price of the Dial In service consists of a lump sum for acquiring the service and a regular monthly fee for supply of the service. For the pricelist of the Dial In service, , see the web page www.telecom.cz/firmy , where you can also calculate the price of the solution you require. The price list is also available at all Telefónica O2 Czech Republic sales outlets - TELEPOINT and TELEPOINT PARTNER.

Requirements

The modem on the user's side is not a part of the Dial In service. The user may use various types of modems that are approved for use in the public telephone network and correspond to one of the recommendations in the technical specifications of the service. The access protocol may be X.28 for asynchronous access or X.25 (X.32) for synchronous access.

Basic technical parameters?

Protocol
X.3/X.28/X.29, X.25 (X.32)
Supported access rates
1,2 kbit/s až 28,8 kbit/s
Supported recommendations
V.22, V.22bis, V.32, V.32bis, V.34
Error correction
V.42/MNP 4
Data compression
V.42bis/MNP 5
PAD parameters (user-adjustable)
ITU-T 1984
Parameters of X.25 (X.32)(preset)
packet size = 128 byte
window size = 3
Possibilities of setting up an X.25 (X.32) connection:
Throughput Class Negotiation
Window Size Negotiation
Packet Size Negotiation

yes
yes
yes
Data flow control
HW/SW
 
 

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