37
Installing the 7800 Series Telecom Units
4.4
Connecting to the TMS Network
Note
You must order one TelcoBridges CAT7 shielded Ethernet crossover cable, with RJ45
type male-male connectors, for each connection between 7800 Telecom units and a
7800-TMS.
4.4.1
Connecting to the TMG7800 Telecom Units
The 7800-TMS enables you to scale your system by interfacing as many as sixteen 7800 Telecom Units
with the 7800-TMS Switch network, building a non-blocking system of up to 32,768 channels. A second
7800-TMS provides your system with an active/standby high availability architecture.
4.4.1.1
Prerequisites
Use TelcoBridges CAT7 shielded Ethernet crossover cable to interconnect the 7800 Telecom Units with
the 7800-TMS.
•
Order one TelcoBridges CAT7 shielded Ethernet crossover cable, with RJ45 type male-male
connectors, for each connection between 7800 Telecom units and a 7800-TMS.
•
If your system features a second 7800-TMS, you must order an additional TelcoBridges CAT7
shielded Ethernet cable, with RJ45 male-male terminations, for each 7800 Telecom Unit.
4.4.1.2
Interconnections
To interconnect the 7800-TMS:
1.
Start with the 7800 Telecom Unit at the topmost position of the equipment rack and connect a
TelcoBridges CAT7 shielded Ethernet crossover cable to the TMS0 connector at the rear of the
7800 Telecom Unit,
figure
4.10
on
page
38. Connect the other end of the same TelcoBridges CAT7
cable to the first port of the first 7800-TMS.
Note
Ensure that the TMS0 port of all the 7800 Telecom units connect to the same 7800-TMS
switch.
2.
If your system employs a second 7800-TMS, connect a second TelcoBridges CAT7 shielded
Ethernet crossover cable to TMS1 at the rear of the TMG7800 Telecom Unit,
figure
4.10
on
page
38. Connect the other end of the same TelcoBridges CAT7 cable to the first port of a second
7800-TMS.
Note
Ensure that the TMS1 port of all the 7800 Telecom units connect to the same 7800-TMS
switch.
3.
Repeat steps 1-2 for each 7800 Telecom Unit until they have all been connected to the 7800-TMS.
Note
All telecom units must use the same TMS port number when two 7800-TMS units are
available.
