
The Voice Tone Module (VTM) provides tone and voice message to modules that indicate call progress to the users.
The VTM contains
18.2.2 VTM SWITCH SETTINGS
Table
| Switch | VTM starting | Sections | |
| slot | 1 | 2 | |
|
| |||
|
|
|
|
|
S1 |
| 0* | Closed | Closed |
|
| 8** | Open | Closed |
|
| 16 | Closed | Open |
|
| 24 | Open | Open |
S2 - Monitor Switch. A front panel,
S3 - Reset. Normally open, press to reset.
Momentary switch to reset module.
*VTM 1
**VTM 2.
18.2.1 VTM JUMPER PLACEMENT
TablePLACEMENT
JU | Pin | Description |
|
|
|
J11 | 2 to 2* | Selects 27256 EPROM operation |
J12 | 3 to 3* |
|
| 1 to 1 | Selects 27128 EPROM operation |
| 3 to 3 |
|
| 1 to 1 | Selects 2764 EPROM operation |
| 3 only |
|
J20 | 1 to 2 | Transmit PCM Bus line |
| 2 to 3* | VTM PCM Bus line |
*Setting for Normal operation.
No alignment is required for the VTM to operate in the system. However, panel jack output level is adjustable. The S1 switch setting must be correct for the starting slot number. Use S2 to select a voice or tone message.
1.Insert a
2.Adjust R22 for a comfortable listening level.
3.If a tone is selected, set the level at TP1, 9 dB lower than the level on U24, pin 2 for the proper level to the
NOTE: Revision 2 or earlier should have the line from P1, pin 1 to R25 cut. Revision 3 or later should have Jumper on