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Chapter 13 Install Analog Terminal Adapters 285
Installation and Maintenance Guide
Install a Data Communication Device
Use this procedure to install an ATA 2 to a data communication device.
Figure 183 shows the hardware configuration for connecting a data communication device through
an ATA 2 to the Business Communications Manager.
Figure 183 Data communication device installation overview
1 Connect a single-line telephone to the Business Communications Manager ATA 2.
2 Check that the Business Communications Manager ATA 2 is in the Tones OFF mode, lift the
handset and press:
°e°.
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.
6 This procedure is complete.
Note: ° appears as ¿ on some telephones. If you are using a telephone without a ° or ¿
button, refer to the ATA 2 User Guide for details.
Note: If necessary, install the Business Communications Manager 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
Business Communications Manager system.
Data communication device
Business Communications
Manager ATA 2
Business Communications Manager
Line loop resistance:
135 ohms maximum
Terminal loop resistance:
200 ohms maximum
Central
Office
ATA 2 power cord