*Hi folks, I could really do with some help with something.*> I'm studying telecoms in particular T1 circuits. Currently its on about > superframing and Extended Superframing. > I've been reading something: >

How many times per second, on each channel, does 'frame 6' occur? with one bit of that frame being used for 'A' signalling, the bit rate for that bit is the same as the frequency of that frame.

I don't know where you got that 8000 multiplier from, but it is__ _way_ __wrong.

A superframe has__ _12_ __frames, each containing 1 sample from each channel it is 12x (192+1) bits long.

A superframe passes once every 12/8000 second. this means that there are

666.66666 ... superframes per second.`oThus, there is 1 bit per superframe ***per***channel*** used for 'A' signalling, and 1 bit per superframe ***per channel* used for 'B' signalling.

***per***channel* per second and a similar number of 'B' bits/second multiplied by 24 channels, gives 16,000 'A' bits/second aggregate, and the same for the 'B' bits.