Telephony

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Videos // Resources

Applications

open source portable SIP softphone

Resources

“Publishing comprehensive and up to date information on how to dial internationally from the USA, Canada or from any other country is our goal here at HowtoCallAbroad.com. Telephone country codes and international area codes are provided for each country with additional information featured such as cell phone codes, telephone books and time zones.”

Telephones UK

Incredible wealth of historical knowledge centered around telecommunications in the United Kingdom

World Tone Database from 3am Systems

“International call progress tones for IP-PBX and VoIP telephony” (registration required)

Test Phone Numbers

An assortment of third-party phone numbers for fun and testing. The cost of calling a phone number varies depending on the destination and your provider. Check with your phone provider. Dickey Systems does not own or operate these numbers, listed for reference purposes only.

North America

+17124322950

Deutsche Welle English

+12063430011

This call requires a coin deposit please hang up momentarily

+17195676742

Time Voice Announcer, Colorado Springs, Colorado, USA

+13034997111

Time Clock Boulder, Colorado, USA

+16317918378

This is a handy phone number to check your VOIP or Cell phone sound quality. it offers several tests including message playback test, echo test, DTMF test, music on hold, frequency sweep, conference bridge, etc.

+18004377950

MCI Automatic Number Announcement Circuit (ANAC)

+19147379938

CPTA announcement test (funny)

+18586515050

Weird poem test number

+14183800099

Quebec City, Quebec, Canada Automatic Number Announcement Circuit (ANAC, French Language)

+18443876962

They Might Be Giants - Dial-A-Song

+18773501730

Death From Above - Call now! Totally discreet. Toll-free. No charges apply. What are you waiting for? Call Now! For Lovers Only! (connects to poem by the band)

Call now! Totally discreet. Toll-free. No charges apply. What are you waiting for? 1-877-350-1730. Call Now! For Lovers Only! pic.twitter.com/NqFbBXZRcC
— DEATH FROM ABOVE 1979 (@dfa1979) January 18, 2021