Shared Service Ports
9-63
Mu
sic Backgr
oun
d an
d Music-On-Hold
(M1/
M2
)
9
9.11
Music
Background and Music-On-Hold (M1/M2)
The Coral IPx 500 provides, via the MSBipx, the following common system functions:
Two music inputs, one of which can be internal.
Music-on-hold interface (two ports).
Key telephone background music interface (two different sources)
Figure 9-13
is a simplified circuit diagram of the two Music Interfaces.
The external music (M1,M2) interfaces are electrically identical. Audio signals to the
system are passed through the audio coupling transformer to the interface. A direct
current (DC) blocking capacitor protects the secondary winding of the audio coupling
transformer from conducting DC energy. As a music input the circuit operates as an
input only, and so it can be used to play but not record music.
Internal music (M1) is available in some countries. The selection between the internal
or external source is accomplished by JU9 jumper located on the MSBipx card. See
Figure 9-1
.
Table 9-5
defines the position of JU9 for the music selection.
The system music source M1 may be either from an internal or an external source.
Figure 9-14
displays the jumper settings for the source type.
Table 9-5
Music M1
Internal/External
Selection JU9 Jumper
Setting
1
Introduction
2
Circuit Description
3
Configuring the Music M1 Jumper to External or Internal
JU9
1-2
2-3
M1
Internal
External
M2
External
External
Summary of Contents for Coral IPx 500
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Page 58: ...2 16 Coral IPx 500 Installation Manual Site Inspection 2 NOTES...
Page 120: ......
Page 126: ...3 6 Coral IPx 500 Installation Manual Power Supply Test 3 NOTES...
Page 152: ...3 32 Coral IPx 500 Installation Manual Installation Wrap up 3 NOTES...
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Page 184: ...5 14 Coral IPx 500 Installation Manual Protection Devices 5 NOTES...
Page 188: ...5 18 Coral IPx 500 Installation Manual Power Fail PF Transfer Circuits 5 NOTES...
Page 204: ...5 34 Coral IPx 500 Installation Manual MDFipx Units Supplied by the Manufacturer 5 NOTES...
Page 256: ......
Page 288: ...6 32 Coral IPx 500 Installation Manual Coral IPx 500M Main Cage Description 6 NOTES...
Page 296: ...6 40 Coral IPx 500 Installation Manual Coral IPx 500X Expansion Cage Description 6 NOTES...
Page 316: ......
Page 332: ...7 16 Coral IPx 500 Installation Manual PS500 DC Power Supply Unit 7 NOTES...
Page 350: ...7 34 Coral IPx 500 Installation Manual PS500 AC Power Supply Unit 7 NOTES...
Page 376: ......
Page 380: ...8 4 Coral IPx 500 Installation Manual Control Cards 8 NOTES...
Page 404: ...8 28 Coral IPx 500 Installation Manual IMC8 Card Flash Erasable Software Memory Unit 8 NOTES...
Page 412: ...8 36 Coral IPx 500 Installation Manual DBX Card Database Expansion Memory Unit 8 NOTES...
Page 426: ...8 50 Coral IPx 500 Installation Manual CLA Card CoraLINK Adapter 8 NOTES...
Page 428: ......
Page 432: ...9 4 Coral IPx 500 Installation Manual Shared Service Circuitry Installation 9 NOTES...
Page 460: ...9 32 Coral IPx 500 Installation Manual Three Way Conference Conference Circuitry 9 NOTES...
Page 490: ...9 62 Coral IPx 500 Installation Manual KB1 KB2 KB3 RS 232E Data Serial Port 9 NOTES...
Page 498: ...9 70 Coral IPx 500 Installation Manual Music Background and Music On Hold M1 M2 9 NOTES...
Page 518: ...9 90 Coral IPx 500 Installation Manual Relay Contacts RLY1 RLY2 RLY3 9 NOTES...
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Page 526: ...10 6 Coral IPx 500 Installation Manual Peripheral Card Installation 10 NOTES...
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