Leased lines (SDH based)


Private Leased Circuit is a data transmission service based on SDH technology. The ordered bandwidth is fully dedicated for a connection between two client’s offices. Bulgartel offers International and National  Private Leased Circuits (IPLC and NPLC). Guaranteed bitrate, minimal possible delay and protocol transparency are assured by SDH technology itself.

Service is appropriate for customers demanding guaranteed bitrate, for applications which can be critically affected by the transmission delays and for provisioning of TDM based voice services.

  • Fiber optic connectivity from point to point;
  • Guaranteed bitrate;
  • Fully dedicated bandwidth for the connection between two customer’s offices;
  • SDH and DWDM based transmission;
  • Minimal possible delay and protocol transparency;
  • Protection within Bulgartel Network Backbone;
  • Local loop protection can be provided upon customer’s request and feasibility;
  • Guaranteed service availability on a monthly base.
Service parameters


  • From 1Mbps to 10 Gbps – 1 Mbps, 2 Mbps, 34/45 Mbps, STM 1/4/16/64 – standard capacity using SDH technology;
  • From 64 kbps  to 1 Mbps – 64 kbps, 256 kbps, 512 kbps – upon customer’s request using SDH technology;
  • 1 Gbps Ethernet, 1/2/4/8 Fiber Channel, 10 Gbps Ethernet – standard capacity using DWDM technology.


  • G 703/704, X.21, V.35, Ethernet (for capacity up to 2 Mbps);
  • G.703 (Е1, E3, DS3);
  • G.957 – STM 1/4/16/64;
  • FE, 1 Gbps Ethernet, 10 Gbps Ethernet WAN PHY, 10 Gbps Ethernet LAN PHY.
  • Available service protection: MSP 1+0, MSP 1+1, SNCP.
Implementation and Support

Bulgartel is fully responsible for service provisioning upon Agreement/Service Order Form placement. Maximal lead time is 30 days. Express delivery is available upon a client’s request and is subject of Bulgartel’s confirmation.

24x7x365 maintenance is provided by NMC (Network Management Center). Ambitious professionals are monitoring and ensuring the parameters  of the SLA.

 24 hours hot line:  +359 885 777 315.