3Com NBX 100 Administrator's Manual - page 193
Other manuals for NBX 100:
Installation Manual, Planning Manual, Software Upgrade Instructions, Administrator's Manual, Release Note, Release Note, Quick Reference Manual, Administrator's Manual, Administrator's Manual, Manual, Installation Manual, Quick Reference Manual
Manual is about: Networked Telephony Systems
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Obtaining a Dial Tone from a PBX System
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3 From the CO Switch Protocol drop-down list, select the appropriate
protocol.
4 Click OK.
If your NBX system connects to the PBX system by means of a T1 line, you
must configure the T1 Group settings:
1 On the NBX system, click PSTN Gateway Configuration > T1 Groups.
2 Click the appropriate group name.
3 Modify the fields appropriately. See the online Help for more information
about the fields.
4 Click OK.