Cisco 3521, Руководство администратора

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Administrator’s Guide for Cisco IPVC 3521 BRI Gateway, Cisco IPVC 3526 PRI Gateway, and Cisco IPVC 3540 PRI Gateway
OL-7995-01
Chapter 3 Configuring the Cisco IPVC 3500 Series Gateway
Configuring Gateway Settings
Note
You can configure this setting only if you select Japan in the Country field. Skip to step 11
otherwise.
Step 11
Click Fractional to select fractional channels.
The Fractional dialog box appears.
Step 12
Select the Fractional line check box to enable the fractional selection of channels.
Step 13
In the Select the channels field, select the check boxes for the individual channels you want to use for
fractional E1 or T1 distribution. The table contains 24 check boxes for T1 or 31 check boxes for E1.
Note
You cannot select channel 24 of the T1 settings and channel 16 of the E1 settings. These are
reserved as the signaling (D) channels that are essential for communication.
Note
You can click Select All to select all fractional channels or Deselect All to unselect all fractional
channels.
Step 14
Click OK to close the Fractional dialog box.
Step 15
For all gateways, click Advanced to configure line coding, framing, and signaling type.
The Advanced dialog box appears.
Step 16
In the Line coding field, choose the type of modulation used to encode the data.
Step 17
In the Framing field, choose the framing and error detection method.
Note
The ESF CRC6JT framing option is available only if you select Japan in the Country field and
Long Haul in the Line Build Out field.
Step 18
In the Signaling type field, choose the signaling type.
Step 19
Click OK to close the Advanced dialog box
.
About Advanced ISDN Settings for PRI Gateways
Note
This section applies only to the Cisco IPVC 3500 PRI Gateways.
In the Advanced ISDN section of the PRI Port tabs, you can view and configure ISDN settings for
Cisco IPVC 3500 PRI Gateways.
Table 3-11 explains the information that this tab displays.