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Figure 721 E1 parameters configuration page (2)
You are not allowed to configure the following parameters on an ISDN interface if there is still a call
on it:
• ISDN Overlap-Sending
• Switch to ACTIVE State Without Receiving a Connect-Ack Message
• Carry High Layer Compatibility Information
• Carry Low Layer Compatibility Information
• ISDN Call Reference Length
These parameters can take effect only if it is configured when there is no call on the interface.
Alternatively you can manually disable the ISDN interface, configure the parameters, and then
enable the interface again. The operations, however, will lead to the disconnection of calls existing
on the interface.
Table 267 Configuration items
Item Description
ISDN Parameters Configuration
ISDN Protocol Type
Set the ISDN protocol to be run on an ISDN interface: DSS1, QSIG, or
ETSI.
By default, an ISDN interface runs DSS1.
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