3Com 3C10402B, Руководство администратора

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Configuring and Managing Digital Line Cards 173
Rapid blink — Data is passing into or out of the card through the
10/100 Uplink port.
Modifying a Digital
Line Card
These sections tell you how to modify a Digital Line Card that is already
installed in the system:
■
Modifying a Span
■
Configuring Partial E1 and T1 Lines
■
Modifying Span Audio Controls
Modifying a Span
To modify a span:
1 Click the appropriate link:
■
PSTN Gateway Configuration > T1 Spans
■
PSTN Gateway Configuration > ISDN PRI Spans
■
PSTN Gateway Configuration > ISDN BRI Spans
2 Click the MAC address of a span you want to modify.
3 Make the necessary changes. See the online Help for more information
about the fields.
Depending on the configuration of the Digital Line Card:
■
The ISDN BRI-ST Digital Line Card supports two or four channels per
span.
■
The E1 Digital Line Card supports 30 channels per span.
■
The T1 Digital Line Card configured for DS1 supports 24 channels. The
T1 Digital Line Card configured for ISDN PRI, it supports 23 channels.
4 Enable the On Line check box to bring the span online.
Note that the span does not come online unless the card is online first.
5 Click OK .
Configuring Partial E1 and T1 Lines
Some telephone companies offer an E1 or T1 line that has less than the
maximum number of channels implemented. This is called a
Fractional,
Partial, or Subequipped E1 and Subequipped T1 .
Example : To reduce near-term costs, you might decide to purchase 15
channels now and implement more later.