Plain old telephone service (English Wikipedia)

Analysis of information sources in references of the Wikipedia article "Plain old telephone service" in English language version.

refsWebsite

Global rank English rank

4,216^th place

3,151^st place

986^th place

803^rd place

1telecom101.com

low place

low place

itu.int

"I.430 : Basic user-network interface – Layer 1 specification". International Telecommunication Union. 2010-08-23. Retrieved 2015-05-07.

nokia.com

documentation.nokia.com

"AnyMediaTM Access System: Software Release Description for Software Release 1.0.0.0" (PDF). Lucent Technologies. September 28, 1998. Retrieved February 28, 2020.

telecom101.com

Coll, Eric (2008). Telecom 101. Teracom Training Institute. ISBN 978-1894887014.