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Home : CCNP : Serial Links

Serial Links

Jul 22,2008 by admin

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Serial Links

This type of network has also been historically popular in connecting branch offices. These lines can be ordered from a fractional T1 such as 56 kbps up to DS3s. Possible fractional T1 line speeds include 56 kbps, 128 kbps, 256 kbps, and so on. A full DS3 has a speed of 45 Mbps.

These networks do not provide any of the congestion control and error-detection capabilities that Frame Relay provides. The onus is completely on the higher-layer protocols to provide such services.

As with Frame Relay, cost is also an issue with these links

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