SSH EN 300 903 V8.1.1:2000

Digital cellular telecommunications system (Phase 2+) (GSM); Transmission planning aspects of the speech service in the GSM Public Land Mobile Network (PLMN) system (GSM 03.50 version 8.1.1 Release 1999)

Scope

The present document describes the transmission planning aspects pertaining to the speech service in the GSM PLMN
system. Due to technical and economic factors, there cannot be full compliance with the general characteristics of
international telephone connections and circuits recommended by the ITU-T.
The present document gives guidance as to the precautions, measures and minimum requirements needed for successful
interworking of the PLMN with the national and international PSTN. The present document identifies a number of
routeing and network configurations. The objective is to reach a quality as close as possible to ITU-T standards in order
to safeguard the performance seen by PSTN customers.