October 2008 - Fax and Telecom Testing Blog

Fax and Telecom Testing Blog

Home
Contact

Syndication

Archives

Sort by: Most Recent | Most Viewed | Most Commented

Fax Book and Free Test

For those of you working with Fax of IP, an interesting book called "Fax, Modem, and Text for IP Telephony" was recently published by Cisco Press. This book covers both T30 and T38 basics, as well as much more. It has very positive reviews on...

Published 31 Oct 2008 3:27 PM by Jim Zuber

Filed under: Fax, t.38, t.30, telecom industry
What is NSF... and why should I care?

In the late '70s, T.30 was created to make fax machines something they had never been before, interoperable. But many of their manufacturers wanted to go outside of T.30 and continue to use some of their non-standard tricks and abilities. The integrated...

Published 23 Oct 2008 1:53 PM by John Lunsford

Filed under: Fax, t.30, telecom industry
V.34 to V.17 Can Be a Hard Fall

Now that the V.34 compatibility battle is finally being won, a new problem has surfaced. How do two fax terminals that were attempting to use V.34 mutually decide to abandon it, fall back to V.17 and complete sending their pages? When the "Super...

Published 22 Oct 2008 8:26 PM by John Lunsford

Filed under: Fax, t.30, Tips and Tricks, telecom industry
Fax Transmission Power — More Is Not Always Better

There is an article of faith among analog electronics engineers that, if you have to send a signal through difficult conditions, pumping up the power is a good, time honored approach to doing so. But, what about distortion? Somewhere power boosts have...

Published 8 Oct 2008 7:43 PM by John Lunsford

Filed under: Fax, t.30, Tips and Tricks, telecom industry
ITU E.450 Figure Of Merit – The User’s Point of View

The dichotomy of fax protocol conformance versus interoperability becomes most pointed when it is necessary to gauge the performance of a fax terminal. A Quality of Service (QoS) standard is simply a necessity for this type of evaluation. The ITU undertook...

Published 1 Oct 2008 9:23 PM by John Lunsford

Filed under: Fax, t.30, Tips and Tricks, telecom industry

October 2008 - Fax and Telecom Testing Blog

Syndication

Tags

Recent Posts

Archives

Fax Book and Free Test

What is NSF... and why should I care?

V.34 to V.17 Can Be a Hard Fall

Fax Transmission Power — More Is Not Always Better

ITU E.450 Figure Of Merit – The User’s Point of View