Nortel Networks BCM1000 - Manual (Page 225)

Chapter 13 Installing Analog Terminal Adapters 225
Installation and Maintenance Guide
Installing a data communication device
Figure 90 shows the hardware configuration for connecting a data communication device through
an ATA 2 to the Business Communications Manager.
Figure 90 Data communication device installation overview
The following steps explain how to install an ATA 2 to a data communication device.
1 Connect a single-line telephone to the ATA 2.
2 Check that the ATA 2 is in the Tones OFF mode, lift the handset and enter LINK 18.
3 Make sure the terminal loop resistance is less than or equal to 200 ohms.
4 Disconnect the single-line telephone from the ATA 2.
5 Plug the data communication device into ATA 2.
Note: LINK appears as RECALL on some telephones. If you are using a telephone
without a LINK or RECALL button, refer to the Business Communications Manager
ATA2 User Guide for details.
Note: If necessary, install the ATA 2 near to the data communication device to maintain a
maximum loop resistance of less than 200 ohms. When using 0.4 mm wire (26 AWG), the
ATA 2 must be within 800 m (2,600 ft.) of the BCM1000.
Data communication
device
Business Communications
Manager ATA2
Business Communications
Manager
Line loop resistance:
135 ohms maximum Terminal loop resistance:
200 ohms maximum
Central
Office
ATA 2 power cord