Question

Internal bit rates of switches differ from the external interface of 8-bit time slots. Northern Telecom DMS-100 maps the 8-bit PCM "word" into a -bit time slot. What is/are the function(s) of the extra two bits? 

   Internal bit rates of switches differ from the external interface of 8-bit time slots. Northern Telecom DMS-100 maps the 8-bit PCM "word" into a -bit time slot. What is/are the function(s) of the extra two bits?
Telecommunication System Engineering
Telecommunication System Engineering
Roger L. Freeman 4th Edition
Chapter 9, Problem 13 ↓

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Step 1: The extra two bits in the mapping of the 8-bit PCM word into a -bit time slot serve as overhead bits.  Show more…

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Internal bit rates of switches differ from the external interface of 8-bit time slots. Northern Telecom DMS-100 maps the 8-bit PCM "word" into a -bit time slot. What is/are the function(s) of the extra two bits?
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