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1. AC Power.
2. TrunkSupervisor connector. Provides connection
to the COM port of the external PC running
TrunkSupervisor software.
3. TrunkEdit connector. Provides connection to the
COM port of the extra PC running TrunkEdit
software.
4. Trunk Master A TrunkSupervisor connector.
Connects to COM port 2 of the TM-2000/MTM-
2000 assigned to be Trunk Master A.
5. Trunk Master A TrunkEdit connector. Connects to
COM port 1 of the TM-2000/MTM-2000 assigned
to be Trunk Master A.
6. Trunk Master A parallel port. Connects to parallel
printer port of the TM-2000/MTM-2000 assigned to
be Trunk Master A. Provides control from the
SWP-2000 to the TM-2000/MTM-2000 and LED
status monitoring of the TM-2000/MTM-2000 and
LED status monitoring of the TM-2000/MTM-2000
on SWP-2000 front panel.
7. Trunk Master B TrunkSupervisor connector.
Connects to COM port 2 of the TM-2000/MTM-
2000 assigned to be Trunk Master B.
8. Trunk Master B TrunkEdit connector. Connects to
COM port 1 of the TM-2000/MTM-2000 assigned
to be Trunk Master B.
9. Trunk Master A parallel port. Connects to parallel
printer port of the TM-2000/MTM-2000 assigned to
be Trunk Master A. Provides control from the
SWP-2000 to the TM-2000/MTM-2000 and LED
status monitoring of the TM-2000/MTM-2000 on
SWP-2000 front panel.
Understanding Trunking
In a trunking system, the audio lines (not data) of one
or more intercom ports are interconnected between
two separate intercom systems. The system adminis-
trator in each intercom system then places restrictions
on these ports to prohibit them from being assigned to
any keys. This reserves the ports for exclusive use as
trunking lines. A special RS-485 data link is also
connected from each intercom system to the trunk
master for exchange of system control signals. The
main difference between the TM-2000 and the MTM-
2000 is the number of intercom systems it can commu-
nicate with. The TM-2000 supports up to 32 ports (see
the last NOTE on page 10), whereas the MTM-2000
can support up to 16 ports. Once the interconnections
are completed, the trunk master is programmed, using
TrunkEdit, to recognize the individual intercom sys-
tems.
After the trunk master has been programmed, system
administrators or keypanel users in each intercom
system may request lists of persons, party lines, etc.
from the other intercom systems for purposes of key
assignment just as they would in their own intercom
system.
After keys are assigned, keypanel operators can
activate them or talk or listen just like in their own
intercom system. There is no apparent difference to
keypanel operators, but what actually occurs in the
system electronics is slightly different.
When a keypanel operator activates a key to talk to a
destination located in another intercom system, the
intercom system's master controller does not act itself
to close any crosspoints, but rather, it sends this
information to the trunk master via the data connec-
tion. The trunk master then checks for an available
trunk line. If one is available it notifies the master
controllers in the affected intercom systems to
establish the communication path using the trunk line
that it specifies. If no trunk lines are available, the
trunking system will notify the master controller in the
caller's intercom system, which will then send a
"busy" signal to the calling keypanel.
If more than two intercom systems are intercon-
nected, additional trunk lines must by reserved and
interconnected between the systems. However, it is
not always necessary that two intercom systems be
directly interconnected as along as there is a path not
more than one system away to connect the two
systems. The trunking system can be programmed to
permit "cascaded" trunking in which a pathway is
established through an intermediate intercom system
to connect two endpoints.
NOTE: The system and its software only support a
single level of cascade. For example, System A
wants to talk to System C, but it does not have a
direct connection to System C. System B has both a
connection to System A and to System C. System A
can talk to System C by going through (cascading)
System B. However, it would be impossible for
System A to talk to System D if it had to go through
both System B and System C to do so, because that
would require two levels of cascade.
Installation
Unpacking
Please report any damage to the shipper or Telex
immediately.
Installing Software
There are two software packages that can be used
with an external PC connected to the TM-2000/MTM-
2000. The TrunkEdit software package is included
with the TM-2000/MTM-2000 system. This package
provides the user with the ability to program (config-
ure) and monitor the TM-2000/MTM-2000. The other
software package is called TrunkSupervisor is avail-
able as a separate add-on at an additional cost.
TrunkSupervisor is an advanced monitoring package
for trunked systems.
9
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