Section 10: POTS Operation and Usage Tips
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T E C H N O L O G Y
Warning on Digital Phone Systems:
Digital phone systems typically run off
voltages greater than the 50 volts used by the PSTN. Some older ISDN systems
run on approx 100 volts. Connection of a
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POTS codec to a voltage
greater than the normal 50 volts will cause damage to a POTS codec and void
the warranty.
Handy Hint:
To find out if you are about to connect a
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codec to a digital
line, use your normal analog phone to check the line first.
WARNING for Installation of Modules:
If you are installing or uninstalling any module, please ensure that the codec is
not powered up during the installation process. We recommend you use anti-
static precautions to help minimize the chances of static charges damaging the
highly sensitive circuitry. Do not force a module into the codec. Modules should
be installed slowly and gently.
10.9.
Tips for Successful Operation
Following are a few simple and handy hints that could save you a lot of blood,
sweat and tears when you are setting up your codec at a remote site:
1.
It can be a good idea to take your own phone when you are doing a
remote broadcast. If possible, dial the number you are going to use and
check for any unusual noises. These may be due to other devices
connected to the line.
2.
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USA has a test unit on 317 913 6911 to facilitate testing. A
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G
3
codec will automatically negotiate the optimal connect rate for
each individual circuit on connection
3.
Some facilities, especially large hotels, are able to provide phone
connection points to allow a dial-up connection for lap top Computers.
Lap top Computers use technology similar to
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POTS codecs, so a
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codec
will invariably work if the computer connection speed is
24,000 bps or higher.
4.
Take an ADSL/DSL filter to all remote locations. ADSL/DSL modems
can generate noise on a line which will degrade the performance of your
codec. Due to the increasing popularity of ADSL/DSL services on phone
lines, this is likely to be an increasing problem, but one that is simple to
solve. Simply place the ADSL/DSL filter between the POTS line and your
codec to remove the interference.
All this obviously takes time, often requiring assistance from hotel staff, resident
IT professional etc. If you have no other option than connecting your codec to a
PBX/PABX,
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recommends that you confirm that the line works BEFORE
you try to do a live program.
