Collection of bits and pieces about telephony standards, values and other useful (!!?) stuff:
|Network Tones||Major Call Progress tones used in North American network (frequencies & power).|
|DTMF Tones||Frequencies of Standard DTMF tones|
|Ring Patterns||North America and Europe. Ring patterns (cadences in tech speak) used in the switched network - so help me if I hear one more 'Ride of the Valkeries' on a cell phone....|
|VoIP||Simple performance (packet and data rate) comparison of various VoIP encoding standards|
|ISDN||ISDN Standards, packet formats, and IEs.|
|Jacks||Common jacks - er, excuse, me, modular connectors.|
|Wiring||Analog and digital wiring.|
|T1 wiring||T1 wiring over DB25.|
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Page modified: January 20 2022.