ITU-T E.520-1988
Number of Circuits to Be Provided in Automatic and/or Semiautomatic Operation, Without Overflow Facilities - Telephone Network and ISDN - Quality of Service, Network Management and Traffic Engineering (Study Group II) 3 pp

Standard No.

ITU-T E.520-1988

Release Date

1988

Published By

International Telecommunication Union (ITU)

Status

Withdraw

Replace By

ITU-T E.520-1993

Latest

ITU-T E.520-1993

Scope

The CCITT recommends that the number of circuits needed for a group should be read from tables or curves based on the classical Erlang B formula (see Supplements Nos. 1 and 2 at the end of this fascicle which refers to full availability groups). Recommen

ITU-T E.520-1988 history

• 1993 ITU-T E.520-1993 NUMBER OF CIRCUITS TO BE PROVIDED IN AUTOMATIC AND/OR SEMIAUTOMATIC OPERATION, WITHOUT OVERFLOW FACILITIES
• 1988 ITU-T E.520-1988 Number of Circuits to Be Provided in Automatic and/or Semiautomatic Operation, Without Overflow Facilities - Telephone Network and ISDN - Quality of Service, Network Management and Traffic Engineering (Study Group II) 3 pp