jotron WP 900 Manual Del Usuario página 57

Installation Guide
PBX Interface T942PX
13. Selection of 2-Wire or 4-Wire
Speech/Audio Line Connection
Normally 2-wire speech/audio line connection is used.
• 2-Wire Speech/Audio Line Connection:
One twisted pair, connected to J05-4 and 5, is used
for sending and receiving speech and DTMF tones.
Set jumpers S12 and S13 to 1-2, and S14 to 2-3.
S11 is not to be jumpered.
• 4-Wire Speech/Audio Line Connection:
One twisted pair, connected to J05-4 and 5, is used
for sending speech and DTMF tones.
A second twisted pair, connected to J05-7 and 8, is
used for receiving speech and DTMF tones.
Set jumpers S11 and S14 to 1-2.
S12 and S13 are not to be jumpered.
Note: Speech module T941SM is always
required when the 4-wire speech/audio
line connection is used.
14. Impedance Matching
T942PX input impedance is set with jumpers S18 and
S19.
For the normal setting (600 ohm) S18 is set to 1-2
and S19 is not jumpered.
When the impedance is complex, S19 is set to 1-2
and S18 is not jumpered
15. Register Recall Signal
T942PX produces the register recall signal,
(R-button on telephone), according to one of the
following methods which is selected by a software
parameter (method 1 is default):
Method 1. Audio line dc-loop is broken for a
certain time.
Method 2: The audio line connected to J05-4 is
short circuited to J05-6.
If method 2 is used J05-6 must be connected to
telephone ground.
16. Decadic Pulsing (Dial Pulses)
If T942PX is connected to an extension (installation
alternative 4 in table on page 4) and decadic pulsing
is used, jumpers S15, S16, and S17 must be set to
1-2. In all other cases S15, S16, and S17 are not to
be jumpered.
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17. Installation Test Procedure
1. Check that section 2 of switch SW02 is set to OFF.
2. Energize the teleCOURIER 900 system. Function
indicator LED01 on the T942PX unit should light red for about 1 second and then go over to a
flashing orange.
If it continues to indicate with a steady red check
that supply voltage is 12,5 Vdc ± 10%.
Flashing red indicates a program fault.
Function indicator
3. If the T942PX is connected to a central, the
indicator should show a steady green indication
within 90 seconds.
If the indicator continues to blink orange, check:
• polarity
• connections on T942PX unit
• T942PX unit is properly addressed
If everything seems to be in OK but the function
indicator still blinks, the fault is probably located
outside the T942PX. Check the other 900 units
according to doc. no TD 90227GB, "System
Installation teleCOURIER 900", or contact your
dealer.
4. Initiate a paging from a telephone connected to
the PBX.
• If the paging is transmitted the installation is
correct. Replace the cover and continue with
point 5 below.
• If the paging is not transmitted, perform test
of the applicable installation alternative below
(see point 17a - 17e). Then replace the cover
and continue with point 5 below.
5. When all other units are installed, perform the
system test described in "System Installation
teleCOURIER 900", document no. TD 90227GB.
Handook page
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TD 91012GB
1996 11 06