CAN/CSA-ISO/IEC-7480-95 (R2013)
This National Standard of Canada is equivalent to International Standard
ISO/IEC 7480:1991.
The international community has decided to make this standard available only in
the English language version. It has been adopted as a National Standard of
Canada on this basis.
1. Scope
1.1 This International Standard specifies signal quality requirements for
serial data transmission at the interface between start-stop transmission Data
Terminal Equipment (DTE) and Data Circuit-terminating Equipment (DCE). The
interface referred to in this International Standard conforms to CCITt
Recommendations V.24 (telephone networks) and X.24 (data networks) as specified
in DCEs of the following CCITT Recommendations:
- V.21, V.22, V.22 bis, V.23, V.26 ter, V.32, V.32 bis, X.20, X.20 bis together
with V.28 electrical characteristics;
- X.20 together with V.10 and/or V.11 electrical characteristics.
The signal quality requirement is limited to start-stop transmission at the
interface with asynchronous DCEs, or with synchronous DCEs operating in
asynchronous mode in accordance with CCITT Recommendations V.14 or V.42.
Signal quality pertaining to DTEs working in a synchronous mode of operation is
not part of this International Standard.
This International Standard is also applicable when the interface as specified
in the above CCITT Recommendations is provided at the ISDN Reference point R as
defined in CCITT Recommendation I.411 and as specified in CCITT Recommendations
V.110, V.120 and X.30.
1.2 The signal quality characteristics apply regardless of whether or not
multiplexing equipment is included. They do not apply where there is
intermediate equipment and no signal regeneration is provided between
interconnected sections.
1.3 This International Standard does not describe the signal quality of the DCe
or the line associated with it. Neither does it describe any requirement for
an acceptable bit error rate.
1.4 This International Standard does not specify the speed characteristics.
The nominal value of the modulation rate and the character interval are
application dependent.
OEN:
CSA
Langue:
English
Code(s) de l'ICS:
35.200
Statut:
Norme
Date de Publication:
1995-02-27
Numéro Standard:
CAN/CSA-ISO/IEC-7480-95 (R2013)