Ltd. "OPTRON" offers landline telephone services. We will develop and offer individual solutions tailored to your company.

There are two types of connection in use:

  • using VoIP (SIP) technology,
  • using digital dedicated line (E1, ISDN PRA).

Solution for medium business

Solution for medium business is ideal for the average office, where local subscriber lines are from 1 to 16. You get:

  • exchange with PBX functions and subscriber lines according to user number;
  • possibility to connect IP telephones;
  • telephone numbers from the SIA OPTRON numbering range, or any other operator whose numbering you use;
  • economic tariff plan;
  • an individual approach and 24 hours a day assistance of our support center.

Corporate solutions

If your company`s number of subscriber lines is large enough (over 16), then optimal corporate solution is connection through the office telephone switch. You'll get:

  • telephone lines, according to the number of subscribers;
  • possibility to connect IP telephones;
  • telephone numbers from the SIA "OPTRON" numbering range, or any other operator, which numbering system you use;
  • telephone switch selection, installation and support under own requirements;
  • the individual tariff plans, depending on your priority call routes;
  • free calls between the company's employees (within telephone switch);
  • the possibility to use Ltd. "OPTRON"as additional telephone service provider (for example, only for international calls or calls within Latvian fixed and mobile operators' networks) ;
  • individual approach and twenty-four hour assistance of our support center.

Connection Parameters  for VoIP (SIP) technology

The electrical parameters.

  • Interface Ethernet 10Base-T/100Base-Tx, set of communications protocols  TCP/IP according to the requirements of  ISO/IEC 8802-3.

Signaling  and  protocols.

  • IP(V.4) protocol according to IETF RFC 791;
  • SIP protocol (V.2) according to IETF RFC 3261;
  • UDP protocol according to IETF RFC 768;
  • TCP protocol according to IETF RFC 793;
  • RTP protocol according to IETF RFC 3550;
  • Voice compression standards according to the recommendations of- ITU-T, using codecs: 711 A-law, G.711 U-law, G.723, G.729ab;
  • Transfer of fax data, according to the recommendations of ITU-T, is achieved by codecs 711 and/or T.38.

Principles of  IP  address  assigning.

Static IP addresses.

The parameters of the Digital dedicated line (E1, ISDN PRA)

Our network allows us to offer our clients a service based on the ISDN connection - ISDN PRA. These connections are based on  Euro-ISDN interfaces and follow ETSI standards.

Find out more! Contact us +371 67150000

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