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O2CARNET/ O3TVCARNET is a broadband Internet access based on the technology of accessing the CARNET network through ADSL technology. O2CARNET/ O3TVCARNET is a single-access CARNET network service developed in cooperation with Optima and CARNET. This service is realized through ADSL technology and enables CARNET network users to join Optima’s network infrastructure through the CARNET network and thus gain access to all the services CARNET provides to its users.

More information can be found here.


CARNET system engineers
other AAI@EduHr users
faculties and colleges
other public institutions

How to Become a User

The O2CARNET/ O3TVCARNET service is provided exclusively to individuals who have an electronic identity in the AAI@EduHr system based on the process of authentication and user authorization for use of the service. User name and password within the AAI@EduHr system are provided by the CARNET member institution to which the user belongs.

The prerequisite for using O2CARNET / O3TVCARNET is the availability of services in the area covered by the Optima network. Network coverage can be found here.

Questions and Answers


What is O2CARNET service?
O2CARNET is a fast Internet access service including a telephone service that is realized in cooperation with Optima and CARNET.

What is O3TVCARNET service?

O3TVCARNET is a service that, apart from the Internet and telephone services, includes television.

Who is O2CARNET/ O3TVCARNET service intended for?

O2CARNET/ O3TVCARNET can be used by all CARNET users who have a unique electronic identity in the AAI@EduHr system.

What are the O2CARNET/ O3TVCARNET rules of conduct?

All CARNET network users are required to act in accordance with the Decision on the acceptable use of the CARNET network. Otherwise, they are subject to the sanctions of the CARNET Abuse Service, which includes temporarily or permanently disabling Internet access. For more information and security tips, visit the CARNET Abuse Service pages.

Account data

Can the sales representatives of the operator request a password when contracting the service?

Sales representatives of the operator can check if the user is entitled to the service using the username only. An electronic identity user in AAI@EduHr is required to keep the password confidential.

How can a user get an electronic identity for access to CARNET?

The electronic identity in the AAI@EduHr system is a virtual identity on the CARNET network, which is provided to individual users from CARNET member institutions (pupils, teachers, students, professors, and member institution staff members), enabling them to use CARNET services.

The data (username and password) are assigned by the CARNET member institution to which the user belongs.

A list of core academic institutions and authorized persons who can be contacted for getting an electronic identity is available here, while students and teachers should contact the registry administrator at their institution.

What is needed to use the O2CARNET/ O3TVCARNET service?

In order for a user to connect to CARNET, they should have an active electronic identity in the AAI@EduHr system, i.e. a username and password for accessing CARNET.

How can a user verify the status of electronic identity on CARNET?

An electronic identity check can be done by users here or by contacting the CARNET Helpdesk at +385 1 6661 555 or by e-mail at


If there is a problem with O2CARNET/ O3TVCARNET service (connection problem, technical problems, slow connection ...) whom to contact - Optima or CARNET?

You must contact the Optima Customer Service at 0800 0088 to help you with all the issues and problems related to the O2CARNET/ O3TVCARNET service.

Which SMTP server is needed to send mails through O2CARNET service?

The SMTP server for the O2CARNET CARNET service is

Verifying account or changing password

Use the interface to change the password:

On the LDAP server’s home page of the institution. The list is on the home page of the institution.

Users from the domain cannot change their passwords through a central password change interface. They change their password through the interface at

Contact Details

To resolve the issues related to the electronic identity (invalid username or password, forbidden connection, etc.), contact the registry administrator of the institution or the CARNET Helpdesk.

CARNET’s User Support Service

Phone: +385 1 6661 555

For questions or difficulties related to the use of O2CARNET / O3TVCARNET you should contact the Optima Customer Service at 0800 0088.

Optima Customer Support

Phone: 0800 0088