invulnerable or immune from unauthorized or fraudulent access or use, or unaccounted-for access or use,
and therefore Comdial disclaims any and all liability, and makes no warranty, express or implied, relating
to unauthorized or fraudulent access or use, or unaccounted-for access or use.
NOTE: Comdial engineers do not recommend DISA for use on loop start lines without disconnect supervision.
While DISA will function, Comdial will not be liable for its performance under any condition where
disconnect supervision is not provided.
NOTE: Callers that use DISA to access a trunk group and place calls (trunk to trunk calling) may experience low
audio levels on their calls due to the normal line resistance of CO lines. A low audio level is usually only
noticeable on long line loops. If signal loss is a problem at a particular site, the installer may need to add a
line amplifier (repeater) in the DISA line.
In regard to the above note, software release 3A adds +3dB of gain to the DISA lines as a default setting,
and provides a means for the programmer to disable this gain if necessary. The software enhancement
also provides a means by which DISA callers can pre select the gain on a DISA line before they select the
line for use. They can dial a code to select either 0dB, +3dB, or +6dB of gain.
It is important to note that uncompensated line–to–line DISA connections often exhibit low audio levels
due to double loop copper losses. While adding gain to these connections will sometimes improve audio
signal levels, the added gain may also result in circuit instability in some connections. This instability
presents itself as a singing sound that can interfere with dialing or voice communications. If callers
experience dialing problems or hear a singing sound in their calls, they should select a lower gain setting
for use.
How DISA Functions
Caller Dials
DISA Number
Caller Hears DISA Tone
or DVA Message
Intercom
Station Rings
Caller Dials
Correct Access
Number
Caller Dials
Incorrect
Access Number
System Disconnects
Caller or Provides
Call Routing
Caller Dials
Authorization
Code
Caller Dials
Correct Code
Caller Dials
Incorrect Code
Caller Dials
Intercom
Number
Caller Dials
DISA Access
Number
Caller Accesses Features
Available To Associated
Station Class Of Service
System Returns
Authorization Tone
System Allows Caller To Dial Code Twice More.
After Third Incorrect Number, System Disconnects Caller.
DXP Plus General Description
GCA40–130
Understanding The Features – 67
Содержание DXP Plus Series
Страница 1: ...Digital Communications System R ...
Страница 363: ...Automatic Call Distributor Technical Manual R QuickQ DXP ...
Страница 424: ...Automatic Call Distributor System Manager s Guide R QuickQ DXP ...
Страница 500: ...Wrap up Time 1 6 Wrapping Up A Call 4 3 Z Zoom Box A 2 GCA70 271 Index I 3 ...
Страница 628: ...Interconnecting The VMI X Installing And Programming For ExecuMail IMI89 206 Installing And Programming For ExecuMail 5 ...
Страница 677: ...Connecting The Equipment Installing And Programming The OPX X IMI89 209 Installing The OPX X 7 ...
Страница 728: ...DP I I I I and FX Series Digital Communications Systems Understanding The Visual Man Machine Interface COMDlA ...
Страница 1112: ...9 08 8 90 1 13 4 78 3 94 UNIS029 TAB003 PLS page 6 GCA40 130 DXP Plus General Description 11B Telephone Features ...