Tech Stuff - Telephony
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. |
Problems, comments, suggestions, corrections (including broken links) or something to add? Please take the time from a busy life to 'mail us' (at top of screen), the webmaster (below) or info-support at zytrax. You will have a warm inner glow for the rest of the day.
