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2.4 Installation of the Trunk Cards
Installation Manual 87
2.4.7 E1 Card
Function
1-port E1 trunk card. ITU-T standard compliant.
Accessory and User-supplied Items
Accessory (included): Ferrite core × 1
User-supplied (not included): RJ45 or BNC connector
Notes
• In some countries/areas, this optional service card must not be connected to the Public Switched
Telephone Network.
• When connecting this optional service card to the trunk, connect through NT1; do not connect to
the trunk directly.
• Use only 1 type of connector (RJ45 or BNC) for connection; RJ45 and BNC cannot be used
simultaneously.
• When connecting the RJ45 connector, attach the included ferrite core. Refer to "2.2.9 Attaching a
Ferrite Core".
• This optional service card can be used for either trunk or extension connection, by setting the A/B
switch or using the connector with appropriate pin assignments.
• To confirm the trunk connection, refer to "Confirming the Trunk Connection" in "2.13.1 Starting the
Hybrid IP-PBX".
CAUTION
E1 ports are SELV ports and should only be connected to SELV services.
LEDs
To NT1/Extension
To NT1/Extension
BNC (TX)
BNC (RX)
BNC (TX) outer conductor
For Frame
Ground Open
For Frame
Ground Short
J308
1
2
3
1
2
3
J308
J309
123
J309
123
BNC (RX) outer conductor
RJ45
OR
OR
AB
For RJ45
For BNC
120Ω
75Ω
120Ω
75Ω
OR