ETSI EN 301 144-4
- Integrated Services Digital Network (ISDN); Digital Subscriber Signalling System No. one (DSS1) and Signalling System No.7 protocols; Signalling application for the mobility management service on the alpha interface; Part 4: Abstract Test Suite (ATS) and
- standard by European Telecommunications Standards Institute, 05/01/2000
- Publisher: ETSI
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