Enterprises use Leased Lines to interconnect their important nodal centres such as primary data centre, back up site, call centre and regional hubs. Hence circuit uptime and scalability-on-demand becomes most important.

Leased Line is the oldest and most basic data connectivity service but is still popular among Enterprises. Reliance Leased Line service suite not only provides the traditional version of leased line but also some of the more advanced flavours that are required by enterprises for different business applications.

The advanced flavours of Leased Lines include,

  • The High-Availability Leased Line variant that is suitable for business critical application. It is built on HDX-a new multi-path restoration technology.
  • The over-the-wire upgradable Ethernet Leased Line suitable for inter-node connectivity that is expected to require regular bandwidth scaling.
  • The virtual fibre or dedicated lambda (wavelength) variant suitable for DR implementation requiring synchronous mirroring capabilities.
Leased Line is the traditional point-to-point, dedicated TDM circuit that is built on the SDH transport technology. It provides choice of bandwidths, ranging from 64 Kbps to 155 Mbps (STM1) and multiples thereof.

The Leased Line service is built on a network that is architected to provide dual path (ring) protection in the access and edge segments, unlike most traditional networks that are single path. In the core segment, due to the large perimeter of the rings, the protection is made even more robust with a multi-path protection mechanism. The result is that enterprises get a higher uptime on their leased lines than they ever got in the past. The service is further supplemented with SLAs for uptime and for time taken to restore the service in the rare occurrence of a service degradation or a failure. The SLA performance reporting is proactive and available to the enterprise administrator online as opposed to the current practice that requires enterprises to manually administer SLA achievements of the service provider and report violations to the service provider later.

Enterprises can opt for the appropriate flavor of the Leased Line Service for connecting key nodal locations such as the data centres, corporate offices, DR sites, call centres among others, on dedicated links.

  • 200 cities & growing
  • Delivery Media-Fibre, Electronics to the building
  • Wireless Broadband LMDS-Microwave-based access for buildings not yet connected on fibre

  • N x 64 Kbps, 2 Mbps (E1), 34 Mbps (E3), 45 Mbps (DS3), 155 Mbps (STM1)

  • Choice of framed & unframed links
  • Interfaces available-G.703, V.35, Optical

  • Last mile reduced to few feet of CAT 5 cable
  • Fibre to the building
  • Electronics mostly placed in enterprise buildings
  • Ring based Access Network
  • Meshed Core Network - More than 2 alternate paths

End-to-end SLA
  • Single point responsibility including local leads at both ends
  • High service availability up to 99.9%

Fewer CPEs required
  • None for G.703 interface (up to E1)
  • Two for V.35 interface (up to E1)
  • Bundled CPEs - capex savings

Performance Reports

An online web-based view (CNM portal) of the enterprise leased line network along with performance reports on SLA parameters can be accessed through internet by designated users or enterprise administrators.

‘Over-the-wire’ bandwidth upgrades cumbersome physical provisioning for bandwidth upgrades is history; all it takes to increase bandwidth is a call to upgrade the bandwidth. 64 kbps to E1 – without change of modem, E3 to STM1 – Over the same fibre & SDH MUX.

Bandwidth Aggregation

Enterprises having a central location that connects to multiple sites via different leased lines can leverage the bandwidth aggregation feature to realize cost savings. Point to multipoint links < E1 can be aggregated into a single E1/E3/STM-1 interface that significantly reduces the number of router ports and associated management complexity.
High-Availability Leased Lines (HA-LL)
High-Availability Leased Lines (HA-LL) is a product flavor of the leased line service, which can provide customers with a very high uptime (99.98%) even in case of multiple fibre cuts in the Reliance Backbone Transport Network..

This High-Availability feature is achieved with intelligent SDH devices deployed in the backbone transport network that have the capability to automatically route the traffic through another path, if the existing path is not available. Existing ring network provides a 1-cut not-out feature that means there is 1-protection path and 1-working path. HA Leased Line provides a 2 (or more) cut not-out feature that provides 2 or more protection paths and 1 working path. Thus, HA-LL routes the traffic through the next available path even if 2 or more fibre links are down.

Managed Lambda

For high bandwidth requirements (beyond 1 Gbps) a dedicated, virtual fibre (Wavelength/Lambda) can be provided between any two customer locations which are managed by Reliance Communications