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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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14y ago
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Robert Luo

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1y ago
Framed E1 is composed with 32 timeslots, every timeslot speed is 64Kbps. The total speed is N*64Kbps, N is 1-31. The framed E1 can support different service by different timeslot, which will be economically if you have different service.
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Robert Luo

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1y ago
you can find some unframed E1 devices and framed E1 devices at below link:
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Robert Luo

Lvl 1
1y ago
you can find some unframed E1 devices and framed E1 devices at below link:
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AnswerBot

6mo ago

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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