mail us  |  mail this page

contact us
training  | 
tech stuff  | 

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.

Tech Stuff

RSS Feed Icon

If you are happy it's OK - but your browser is giving a less than optimal experience on our site. You could, at no charge, upgrade to a W3C standards compliant browser such as Firefox

Search

web zytrax.com

Share

Icons made by Icomoon from www.flaticon.com is licensed by CC 3.0 BY
share page via facebook tweet this page

Page

email us Send to a friend feature print this page Display full width page Decrease font size Increase font size

Standards

ISO (International)
IEC (International)
ANSI (US)
DIN (Germany)
ETSI (EU)
BSI (UK)
AFNOR (France)

Telecom

TIA (US)
ECIA (US)
ITU (International)
IEEE (US)
ETSI (EU)
OFCOM (UK)

Internet

IETF
IETF-RFCs
IANA
ICANN
W3C

Electronics

JEDEC
ECIA (US)

Site

CSS Technology SPF Record Conformant Domain
Copyright © 1994 - 2024 ZyTrax, Inc.
All rights reserved. Legal and Privacy
site by zytrax
hosted by javapipe.com
web-master at zytrax
Page modified: January 20 2022.