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Unframed E1, you will be able to use the full bandwidth of the circuit of 2048 kpbs. Normally, for various reasons, this mode is not given to customers by telco.

Costly service

Framed E1 ,you will be able to use 1984Kbps only from 2048Kbps where timeslot 0 is reserved for sync and signaling purposes.

Less costly when compared with Unframed.

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Balaji V Aleti

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A framed E1 signal includes synchronization and framing bits in each frame, while an unframed E1 signal does not. Framed E1 is used in traditional telecommunication systems, while unframed E1 is common in data networking. Unframed E1 requires external clocking for synchronization, while framed E1 carries its own synchronization information.

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Q: Difference between framed E1 and unframed E1?
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