342 Matrix ETERNITY NE System Manual
Auto Redial
What's this?
The Auto Redial feature retries a call automatically if the dialed number is busy. It repeatedly checks the busy line
till it is free. When the called number is no longer busy, the extension of the caller rings.
Auto Redial saves time and the effort of repeatedly dialing the entire phone number over and over until the called
party gets off the phone.
The Auto Redial feature is supported for external numbers only.
How it works
When an extension user dials a number and gets a busy tone, the user may set Auto Redial. When Auto Redial is
set,
• the ETERNITY NE keeps trying the dialed number.
• It waits for the 'Dial Tone Wait Timer
8
' to expire to begin sensing the dial tone from the CO Network. This
timer is configurable, and is set to 3 seconds as default.
• On sensing the dial tone the ETERNITY NE will dial out the requested number and will wait until the 'Ring
Back Tone Wait Timer
9
' expires to sense the Ring Back Tone from the requested number. This timer is
configurable and is set to 60 seconds as default.
• If the system does not detect Ring Back Tone for 60 seconds, it releases the trunk and tries again after
some time. If the system detects a busy tone, it releases the trunk and redials the number automatically
after some time. This process is repeated until the system detects the Ring Back Tone.
• When the ETERNITY NE detects the Ring Back Tone instead of the Busy Tone, it will ring on the
extension that set Auto Redial. The extension will ring for the duration of the 'Redial Ring Timer
10
'. This
timer is configurable and is set to 45 seconds as default.
• The extension must go OFF-Hook to get connected to the remote party.
• If the extension is in the middle of any activity such as dialing, ringing or speech, the ETERNITY NE will
suspend Auto Redial until the extension becomes idle again. After which it dials the requested number
again.
Two types of Auto Redial are supported by the ETERNITY NE - Auto Redial (normal) and Auto Redial 'Priority' -
that differ from each other in terms of the number of redial attempts and the interval between attempts.
8. Time for which ETERNITY waits to sense the dial tone from the PSTN/CO Network. Valid range of the timer: 000 to 255 seconds.
Default: 003 seconds.
9. Time for which ETERNITY waits to sense the RBT from the PSTN/CO Network after dialing the requested number. This timer is
particularly relevant to CO ports. Valid range of the timer: 000 to 255 seconds. Default: 060 seconds.
10. Time for which the extension that has requested Auto Redial should ring. The valid range of the timer: 000 to 255 seconds. Default:
045 seconds.