Recommendation R.140

       1)   Replace the Note to 31.086 by the following:

"Note - The character coding rules using the seven primary elements  are  the
subject of Recommendations T.50 and V.4.

       2)   Add a Note to 32.372:

"Note - The term scvf is usually applied to a telegraph circuit (32.02) rather than 
to a telegraph channel (32.01)."

       3)   Amend existing terms and definitions as follows:

32.341 multiplexing

       A process for combining signals from several separate tributary channels for 
transmission in the same direction over a common bearer channel.

32.343 multiplexer

       An equipment which combines a number of tributary channels onto  a  fewer
number of aggregate bearer channels, the relationship between the tributary  and
aggregate channels being fixed.

32.345 muldex

       An equipment which  comines/separates  a  number  of  tributary  circuits
onto/from a fewer number of aggregate bearer circuits, the relationship between the 
tributary and aggregate circuits being fixed.

32.3451statistical (intelligent) muldex

       A muldex which continuously re-allocates tributary circuits onto a  fewer
number of aggregate bearer circuits in a manner determined by the data flow on the 
tributaries.

       concentrator

       An equipment which allocates a number of tributary circuits onto a  fewer
number of circuits on a call-by-call basis.  
3)     Add the following terms and definitions:

32.411 Branch line multiplex

       A multiplex whose capacity is a submultiple of that of a main multiplex and 
which gives the possibility to group a certain number of channels of the latter in 
order to extend or deviate them into a specific direction with the aim, for example, 
to connect a small group of subscribers.

32.3411Submultiplex

       A multiplex whose bearer is part of a higher-order multiplex.

33.25  Regeneration

       Elimination of telegraph distortion.

33.251 Inherent regeneration












       Regeneration included in the very principle of the method of switching or 
transmission.

32.3413Equipped channel

       A channel having all the necessary equipment to enable usage in  case  of
need.

32.3414Allocated channel

       A channel used for constituting a subscriber line, a link or a circuit.

31.025 Character length

       Number of unit intervals contained in a character signal.

33.30  Loopback

       Connection of the forward channel with the corresponding backward channel to 
enable the observation on the backward channel of signals which have been emitted on 
the forward channel in order to check quality of transmission.

33.252 Transfer delay

       Duration between the beginning of transmission and complete reception of a 
signal.

32.3491Filling bit

       Bit with no specific meaning used to fill out a time of communication during 
which there are no significant bits to be transmitted.

32.3512Frame structure

       General rule of the establishment of a frame with allocation of each bit to 
a determined channel.

32.3511Frame slot

       An elementary time interval generally allocated to tributary channel.

32.3551Synchronization word
       Sequence of bits allocated to synchronization and appearing periodically in 
one or a fixed number of consecutive fundamental frames.

32.3552Synchronization frame

       Sequence of a fixed number of consecutive fundamental frames containing one 
synchronization word.

32.3415Hybrid multiplex

       A multiplex providing simultaneously transparent and nontransparent (code- 
and-speed independent and dependent) channels.

32.3451Muldex/concentrator

       A muldex with the line concentrating  function  ensuring  that  tributary






channels are only allocated time slots in the aggregate bit stream for the duration 
of their seizure.