Obtaining A Dial Tone From A Pbx System - 3Com 3C10402B Administrator's Manual

190 C 8: PSTN G
HAPTER
Obtaining a Dial
Tone from a PBX
System
C
ATEWAY ONFIGURATION
PSTN Gateway Configuration > T1 Spans
■
PSTN Gateway Configuration > ISDN PRI Spans
■
3 Select the span and click Status.
A red alarm indicates that the test failed. No alarm indicates that the test
passed.
To supply dial tone to your system, you can use:
A third-party PBX system with a digital (T1,E1, or BRI) interface
■
An NBX system, which connects to your system by means of a T1 line
■
When you establish the links between your NBX system and the PBX or
another NBX system, the signalling bits provide the dial tone.
If your NBX system connects to another NBX system, make sure the
Digital Line Card types are configured as T1. This method is not
supported if the Digital Line Card type is configured as ISDN.
1 Click PSTN Gateway Configuration > Digital Line Cards.
2 If the Digital Line Card type is ISDN, click the MAC address of the Digital
Line Card line.
3 In the Card Type drop-down list, select T1.
4 Click Apply.