Industry Standard Telephone Support - Comdial DXP Plus Manual

GCA40–130

Industry Standard Telephone Support

The DXP Plus supports industry standard (IST) telephones.
Distinctive Ringing
An industry–standard telephone can sound one ring cadence for intercom calls and another for for outside
calls. You must select the ringing style in station class of service programming.
DTMF Receiver–Time-out
You can program the amount of time that the system waits to receive a DTMF tone on an
industry–standard telephone. The DTMF receiver–time-out feature applies to the time between a user's
lifting the handset and pressing a dialpad digit.
Do Not Disturb (DND)
You can dial a feature code (#01 by default) from your industry standard telephone and put the telephone
into a do not disturb (DND) condition. While in this condition, an outside call forwards to another station
or to the attendant according to the call forwarding feature. An intercom call will not ring the DND
station and the system sends a fast busy signal to the caller to distinguish the DND from a standard busy
line.
Flash Time
The flash time is the timed length of the signal delivered when a user presses the hookflash (or TAP)
button. The installer can program both the minimum and maximum times that define the IST flash.
Hold Confirmation
Hold confirmation allows the industry–standard telephone users to have positive tone feedback while on
hold.
Offhook Treated As Busy
When an industry-standard telephone user takes the telephone's handset off hook, the IST station appears
busy to the system. This feature prevents the system from ringing an IST station while the station is idle
and off hook making it unable to sound audible ringing.
Message Wait Retrieval Access Code
This feature allows IST station users to respond to a message waiting condition without using the central
message desk. They do this by dialing a special intercom feature code that lets them respond directly to a
waiting message.
Ring Frequency
The system programmer can set a ring frequency of 25 Hz for international applications or set a ring
frequency of 21 Hz for domestic applications. He or she must choose a setting that matches the frequency
of the installed ring generator.
Ring Patterns
Installer can program the ringing pattern for either IST ring mode one or IST ring mode two. Mode one
causes a two-second ring phase while mode two causes a shorter one second ring phase. For this feature
to function properly, the industry-standard telephone interface board must contain firmware revision 2C
Ringing on Busy
When an industry–standard telephone is busy on a call and another call comes to that telephone, the
system sounds three quick tone bursts to the telephone's handset receiver. You must program the ringing
on busy feature.
82 – Understanding The Features
Industry-Standard Telephone Support continued on next page . . .
DXP Plus General Description