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CT1/PRI Interface 137
■ The rules for address translation or packet filtering need to be set if the firewall
is to be set up on the interface.
For more details, refer to the related sections of this manual.
3 Bind an interface to be a pri set
Perform the following configurations in CT1/PRI interface view.
Table 140 Bind the interface to be a pri set
Timeslots on a CT1/PRI interface can be bound to be only one pri set.
When binding an interface to be a pri set, timeslot 24 is used as the D channel and
the other timeslots are used as B channels. If no timeslots are specified to be
bound, all the timeslots will be bound to form an interface similar to an ISDN PRI
interface of 23B+D. If only timeslot 24 on the CT1/PRI interface is bound, the
binding activity will fail.
Only one timeslot binding mode is supported on one CT1/PRI interface at one
time, that is, the interface can only be bound into either channel sets or a pri set.
After the interface is bound to be a pri set, the system will automatically create a
Serial interface numbered serial number:23. This interface is logically equivalent
to an ISDN PRI interface, and hence you can further configure it.
Perform the following configuration in all views.
Table 141 Enter the ISDN interface view
The following is to be set:
■ BDR operating parameters
■ Encapsulate the data link layer protocol PPP, its authentication parameters and
etc.
■ IP address
■ The operating parameters of the standby center need to be set when the
interface serves as the main interface or standby interface of the standby
center.
■ Configure the firewall if necessary.
For more details, refer to the related sections of this manual.
4 Set the length/attenuation of the transmission cable
When the CT1/PRI interface connects the transmission cables of different lengths,
to ensure the quality of the signal to be received by the receiving end, the
attenuation and waveform of signal should match the transmission cables.
Perform the following configurations in CT1/PRI interface view.
Table 142 Set the length/attenuation of the transmission cable of CT1/PRI interface
Operation Command
Bind the timeslots of CT1/PRI interface to be a
pri set
pri-set [ timeslot-list range
]
Remove binding timeslots to be a pri set undo pri-set
Operation Command
Enter the ISDN interface view interface serial number:23
Operation Command