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Most other numbers listed for ringback are specific to one exchange or one telco; available lists tend to be outdated and unreliable. Many former test numbers (such as 320 and 999 in Bell Canada territory) have been reclaimed for use as standard landline or mobile exchange prefixes, with the test codes moved (usually) to the 958 exchange.
By connecting a test telephone set, a technician calls the local telephone number of the automatic number announcement service. This call is connected to equipment at the central office that uses automatic equipment to announce the telephone number of the line calling in. The main purpose of this system is to allow telephone company technicians ...
In telecommunications, a plant test number is a telephone number reserved for use by telephone installers or other workers to test an individual telephone line. Test numbers are typically unlisted. The North American Numbering Plan (NANP) reserves the exchange (central office) prefixes 958 and 959 for plant testing. [1]
Telstra Landline Test numbers 12722123 – Playback the last connected or current landline number (add 1832 in front for private numbers) 12722199 – Ringback the current landline number; Telstra payphone test numbers 12722101 - will only take 1¢ per metering pulses; 0488076353 - will test the SMS function of the phone; Optus landline test ...
Landline Area First number Last number Berlin (0)30-23125 000 (0)30-23125 999 Frankfurt am Main ... is reserved as a test code with no subscriber numbers assigned.
137 - ringer test (ringback number); Pick up phone handset, dial 137, hang up, the phone will ring, pick up handset to cancel. [a] 0196 - Dialed before numbers to show caller ID if it is disabled for outgoing calls on number you are calling from. 0197 - Dialled before any normal phone number disables caller ID for the receiving party.
This phone number must be able to receive phone calls and text messages, so it cannot be a landline or toll-free number. The screen WhatsApp will show you where you'll enter in your phone number.
Telephone number verification (or validation) services are online services used to establish whether a given telephone number is in service. They may include a form of Turing test to further determine if a human answers or answering equipment such as a modem , fax , voice mMail or answering machine .