ETSI EN 300 061-4
- Integrated Services Digital Network (ISDN); Subaddressing (SUB) supplementary service; Digital Subscriber Signalling System No. one (DSS1) protocol; Part 4: Abstract Test Suite (ATS) and partial Protocol Implementation eXtra Information for Testing (PIXIT
- standard by European Telecommunications Standards Institute, 06/01/1998
- Publisher: ETSI
$53.00$106.00
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