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9th June 2011 at 13:40 #66560al83Guest
Can someone explain the difference between Framed and Unframed E1.4th July 2011 at 18:57 #66561GeekGuest
Framed or also known as structured E1, means that it has the protocol needed to distinguish each time slot in a frame.
A 2048 kbps E1 frame has 24 Time slots. TS 0 usually is used for signaling and the remaining TS will each contain a 64 kpbs voice channel. This is needed when older style telecom transmission is used and you need to have the TS separated. See ITU-T G.704 for reference.
Sampling with 8bits at 8kHz was the normal ETSI telephony digital sampling standard before (and still are at many places yet), giving the 64kbps channels. So a E1 actually could carry 23 simultaneous Telephony connections.
Unframed means that there are no structure with TS, only a bitstream of 2048 kbps. It will not be possible to divide this stream into Time slots.8th July 2011 at 15:06 #66562GeekGuest
Ah, I just realized that I was thinking T1 here.
The number of time slots in E1 shall be 32 not 24 🙂19th July 2011 at 09:20 #66563srinivasGuest
How to convert .PL4 files to .MDB?
I was trying to convert it through .NTC butit was not successful.
Please suggest me!26th July 2011 at 09:18 #66564al83Guest
Thanks Geek26th August 2011 at 14:08 #66565HARJEETGuest
HOW MANY CALL IS ON ONE TIME SLOT SIMULTANUSLY26th August 2011 at 15:44 #66566bjushkaGuest
In one timeslot we can have simultaneously, only one voice call if the timeslot is full rate and two voice call if it is half rate.
In one TDMA frame, we can have 8 users at the same time.27th August 2011 at 22:42 #66567SalvoGuest
What do you mean with 8 users?
Aren’t there at least 31 TS to be used simultaneously by one user per TS?
Half rate would mean x2?
Or will there be a need for signaling which takes all other TS?9th May 2020 at 06:18 #72156Vinay LoohachGuest
Earlier i got confused about how much channel does E1 has after reading your above comment its later on i noticed that you have corrected it.