Calling feature
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A service feature is a capability added to a phone line in addition to the basic capability to make and receive telephone calls. Many of them require dialing a vertical service code.
Examples:
- Automatic redial
- Anonymous Call Rejection
- Selective Call Rejection
- Selective Call Acceptance
- Selective Distinctive Ringing
- Three Way Calling
- Call Return
- Voicemail
- Caller ID (Calling line identity, CID)
- Call Completion
- Call waiting
- Call forwarding
- Conference call
- Ring when free
- Camp on
- Call Block
- Speed Dial
- Secondary Ring (The same telephone line is assigned an additional number with a different ring cadence. This is NOT another phone line, simply a different ring, also known as RingMaster or MultiRing)
- Fax Voicemail (Stores faxes in voicemail for later access)
- Call Trace (NOT Call return. User dials a code after an incoming call to send a trace to the number that called. User then must have phone company or annoyance call center get info on call. Used for annoyance calls.
- Call Selector (Allows multiples ringtones for incoming numbers)
