7. An E1 is the European version of our T1. An E1 frame has 32 channels. The first channel is channel 0. All 8 bits of channel 0 are used for framing. Channels 1 to 15 are used for data or voice and no bit robbing is used or needed. Channel 16 is used for control information on all the voice and data channels. Channels 17 to 31 are also for voice or data. a. How many channels are overhead? b. How many channels can be used to send data? c. What is the overhead and the through put for an E1 frame?

Computer Networking: A Top-Down Approach (7th Edition)
7th Edition
ISBN:9780133594140
Author:James Kurose, Keith Ross
Publisher:James Kurose, Keith Ross
Chapter1: Computer Networks And The Internet
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7. An E1 is the European version of our T1. An E1 frame has 32 channels. The first channel is channel 0.
All 8 bits of channel O are used for framing. Channels 1 to 15 are used for data or voice and no bit
robbing is used or needed. Channel 16 is used for control information on all the voice and data
channels. Channels 17 to 31 are also for voice or data.
a. How many channels are overhead?
b. How many channels can be used to send data?
c. What is the overhead and the through put for an E1 frame?
Transcribed Image Text:7. An E1 is the European version of our T1. An E1 frame has 32 channels. The first channel is channel 0. All 8 bits of channel O are used for framing. Channels 1 to 15 are used for data or voice and no bit robbing is used or needed. Channel 16 is used for control information on all the voice and data channels. Channels 17 to 31 are also for voice or data. a. How many channels are overhead? b. How many channels can be used to send data? c. What is the overhead and the through put for an E1 frame?
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