Welcome!
These phone numbers are connected to an IVR menu, with the purpose of testing and debugging audio in the calls. The IVR includes some options, including DTMF read back, Recording and playback, Milliwatt tone, Date and Time reading, etc.
Call testing menu:
1 Recording and playback
2 For test and read DTMF
3 Echo Test
4 Music on Hold
5 Test conference number
6 Milliwatt Beep Test
7 CallerID Reading
8 Current date and time (UTC)
9 Inline DTMF Test (Real-time when each key pressed)
0 For leave any comment or suggestion
POTS/PSTN Numbers for testing (there will be more).
+1 (929) 480-0550 -- New York, USA
+1 (587) 324-1240 -- Alberta, Canada
+1 (628) 239-4680 -- San Francisco CA, USA
(Provider: Signalwire)
+52 55 8526 4635 -- Mexico City, Mexico
(Provider: Zadarma)
+44 20 4577 0586 -- London, England
(Provider: Zadarma)
Sip URIs for test:
sip:
testyourcall@iptel.org
sip:
testyourcall@sip.linphone.org
sip:
testyourcall@sip2sip.info