Installing the Dialogic® Vision™ Server TIGI2U
9
Connecting to a T1 network
Note: Connecting to a T1 network is not applicable in an IP deployment.
For typical T1 communications, each trunk interface connects to a channel service
unit (CSU), which is connected to a T1 trunk line. The CSU provides a DSX-1
interface to the T1 line, and also contains circuitry that enables the central office
(CO) to perform diagnostic tests remotely.
The following illustration shows the Vision Server TIGI2U trunk interface with the
CSU:
CS U
D S X- 1
i n t er fac e
T 1
t r u n k
P u bl i c s w i t c h ed
t el eph on e n et w or k
V i s i on
S er ver
T I G I2 U
You can purchase or lease the CSU from the telephone company or other vendor.
Warning:
The cables attached to this product must be isolated by a channel service unit (CSU)
before the cables leave the building.
To avoid causing T1 service provider alarms, make sure that the Vision Server
TIGI2U always sends a valid signal, either by looping back at the CSU or by
connecting the CSU to a functioning Vision Server TIGI2U. The best way to provide a
loopback is to unplug the cable from the Vision Server TIGI2U to the CSU. The
modular connector on most CSUs loops back the transmit signal to the receive signal
when nothing is plugged in.
Connecting T1/E1 trunk and SS7 signaling cables
Note: Connecting T1/E1 trunk and SS7 signaling cables is not applicable in an IP
deployment. Connecting SS7 signaling cables is not applicable in an ISDN
deployment.
Use shielded cables to connect telecom trunks or SS7 signaling connections to
Dialogic® MD1 RJ-45 interfaces. Trunk interfaces are combined in dual-trunk jacks.
If necessary, you can separate the dual-trunk jacks using the following components:
•
Trunk adapter cables separate the Dialogic® MD1 RJ-45 dual T1/E1 interface
into two RJ-48C interfaces.
•
A rack-mounted signal entry panel splits the Dialogic® MD1 RJ-45 interfaces
into pairs of RJ-48C connectors.
For more information, contact a Dialogic representative.
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