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Digitel Mobile Philippines, Inc., doing business as Sun Cellular (or simply known as Sun), was a wholly owned subsidiary of Digital Telecommunications Philippines (Digitel), which in turn was owned by PLDT and is one of the Philippines' largest mobile telecommunications companies. It was established by Digitel in September 2001 to provide ...
The ringer equivalence number (REN) is a telecommunications measure that represents the electrical loading effect of a telephone ringer on a telephone line.In the United States, ringer equivalence was first defined by U.S. Code of Federal Regulations, Title 47, Part 68, based on the load that a standard Bell System model 500 telephone represented, and was later determined in accordance with ...
The brand has ventured into landline units dubbed 'Barangay Phone' which essentially is a wireless handset which can be used to text mobile phones and call anywhere in the Philippines. Such units are aimed specifically for households where mobile phones may be in the hands of only one or two members of the family.
[1] [2] [3] The service has gained popularity for its discounted call and messaging services, with the "All Network" offers allowing TM subscribers to communicate with users from other local networks. Touch Mobile was started as the first mobile brand in the Philippines that introduced voice messaging system in 2001. Due to the majority of SMS ...
On a two-party service, each user would not hear ringing for calls to the other party. Some 20th-century independent telephone companies deployed four-party lines which used differing frequencies for selective ringing of individual parties (the four possible combinations were 20 Hz or 30 Hz from tip to ground, 20 Hz or 30 Hz from ring to ground).
A vertical service code (VSC) is a sequence of digits and the signals star (*) and pound/hash (#) dialed on a telephone keypad or rotary dial to access certain telephone service features. [1]
A corded landline telephone being used to place a call by President Barack Obama. A landline [a] is a telephone connection that uses metal wires or optic fibre from the owner's premises also referred to as: POTS, Twisted pair, telephone line or public switched telephone network (PSTN). Landline services are traditionally provided via an ...
Some companies change their ringback number every month to maintain secrecy. Some carriers (such as Bell Canada) have been known to disable all payphone calls to 958 or 959 test lines. 4101 was formerly valid on some mechanical switching systems to allow a call to the other party on a two-party line.