How much does a T1 line cost

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questions and answers


What bandwidths are there for leased lines?

The bandwidths currently range from 2 Mbit to 100 Gbit (100,000 Mbit). In the past, SDH bandwidths such as 34 Mbit, 155 Mbit or 622 Mbit were often delivered. In the meantime, however, more and more Ethernet bandwidths (20 Mbit, 50 Mbit, 100 Mbit, 1,000 Mbit, etc.) are gaining ground.

What do the abbreviations E1 and E3 or T1 and T3 stand for?

E1 and E3 are names for dedicated lines used in Germany with a bandwidth of 2 Mbit / s and 34 Mbit / s, respectively. The abbreviations T1 and T3 are again common in the USA and stand for connections of 1.5 Mbit / s and 45 Mbit / s, respectively

What is the difference between SDSL and Leased Line?

Compared to the SDSL line, the carrier guarantees the ordered bandwidth for the dedicated line. Fluctuations in the bandwidth on the line are significantly lower. The customer receives the line dedicated and not overbooked. In general, the SLAs (availability, recovery time, penalties, etc.) of leased lines are significantly better than those of an SDSL line.

How long does a deployment normally take?

The duration of the provision varies from carrier to carrier. If all technician and installation deadlines can be met, it takes about 4-6 weeks from order to provision. (SDSL). Leased line copper 4-8 weeks, fiber optic 16-20 (without construction work). Unfortunately, practice shows that there are always complications that cannot be planned.

How can the highest possible availability of the line be achieved?

If, for example, a very high level of reliability is to be guaranteed for a large location, it is definitely recommended to use a premium primary line (usually on fiber optics). The backup line should then ideally either be built with media redundancy, e.g. via radio relay technology, or also be edge and node-disjoint by means of a second house feed. The routers of the two dedicated lines are then connected e.g. via HSRP. This ensures that the other line is automatically taken over at any time.