This is a collection point for pointers to Interface Engineering and other nuts&bolts documents available on the web. These documents describe things like; how ADSI works, how the different Voice Message Waiting indicators are supposed to act, what ‘Feature Group D’ really is and so on.
It is all pretty heavy reading, but:
- ANSI/TIA/EIA standards
- Cisco Telephony Signalling whitepaper library
- Voice Network Signaling and Control – a particularly good resource
Also the United Kingdom (GB) Public Switching Telephone Network Interopabillity Standards, courtesy of ‘Anonymous’.
April 7, 2023
Phone System 