ETSI ETR 203
- Public Switched Telephone Network (PSTN); Messages and formats for push-button dialling [CEPT Recommendation T/CS 28-01 E (1980)]
- standard by European Telecommunications Standards Institute, 09/01/1995
- Publisher: ETSI
$7.00$14.00
Related Products
ETSI TR 101 279
Experiences of the application of SDL and CATG tools for the development of Abstract Test Suites (AT..
$11.00 $21.51
ETSI ETS 300 511
European digital cellular telecommunications system (Phase 2); Man-Machine Interface (MMI) of the Mo..
$15.00 $29.50
ETSI TS 101 284
Digital cellular telecommunications system (Phase 2+) (GSM); Completion of Calls to Busy Subscriber ..
$13.00 $25.50
ETSI EN 300 766
Access and Terminals (AT); Multiple 64 kbit/s digital unrestricted leased lines with octet integrity..
$13.00 $25.50