1608 IP Telephone End User Guide | 19 | Page
o The Extension to Cellular feature is deactivated.
o The green LED next to the feature button turns off.
o If you use a Feature Access Code to enable EC500, the forwarding icon does not appear in the phone display.
Tones and Their Meanings
Ringing tones are produced by an incoming call. Handset tones are those which you hear through the handset.
Ringing Tones
o 1 ring - A call from another extension.
o 2 rings - A call from outside or from the attendant.
o 3 rings - A priority call from another extension, or from an Automatic Callback call you placed.
o ring-ping (half ring) - A call redirected from your telephone to another because Send All Calls or Call
Forwarding All Calls is active.
Handset Tones
o busy signal - A low-pitched tone repeated 60 times a minute; indicates the number dialed is in use.
o call waiting ringback tone - A ringback tone with a lower-pitched signal at the end; indicates that the
extension called is busy, but the called party has been given a call waiting tone.
o call waiting tone - One, two, or three beeps of high-pitched tone, not repeated; indicates an incoming call is
waiting to be answered. Number of beeps designates the source: 1 for an internal call, 2 for an outside or
attendant call, 3 for a priority call.
o confirmation tone - Three short bursts of tone; indicates a feature activation or cancellation has been accepted.
o coverage tone - One short burst of tone; indicates your call will be sent to another extension to be answered by
a covering user.
o dial tone - A continuous tone; indicates dialing can begin.
o intercept/time-out tone - An alternating high and low tone; indicates a dialing error, a denial of the service
requested, or a failure to dial within a preset interval (usually 10 seconds) after lifting the handset or dialing the
previous digit.
o recall dial tone - Three short bursts of tone followed by a steady dial tone; indicates the feature request has
been accepted and dialing can begin.
o reorder tone - A fast busy tone repeated 120 times a minute; indicates all trunks are busy.
o ringback tone - A low-pitched tone repeated 15 times a minute; indicates the telephone dialed is being rung.
Troubleshooting
Problem Solution
A feature does not work as noted in the
book.
1. Reread the procedure and try again.
2. For many features you must lift the handset before you can
use the feature.
3. Check with your system manager to be sure this feature is
administered on your telephone.
The telephone does not ring. 1. Set the ringer volume to a higher level.
2. Place a test call from another extension to your extension.
3. If there is still a problem, see your system manager.
Glossary
activate
To begin or turn on the operation of a feature.
attendant
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