3com 3031 Instruccion De Instalación
CT1/PRI Interface
151
■
When it is working as a PRI interface, timeslot 24 will be used as a D channel
for signaling transmission. Therefore, only a group of timeslots except the
timeslot 24 can be chosen as the B channel. This timeslot group can be
bundled together with timeslot 24 to form a pri-set. This pri-set will work as an
interface that has the same logic features of an ISDN PRI interface and supports
PPP and network protocols such as IP and IPX and the configuration of DCC
parameters.
for signaling transmission. Therefore, only a group of timeslots except the
timeslot 24 can be chosen as the B channel. This timeslot group can be
bundled together with timeslot 24 to form a pri-set. This pri-set will work as an
interface that has the same logic features of an ISDN PRI interface and supports
PPP and network protocols such as IP and IPX and the configuration of DCC
parameters.
Configuring CT1/PRI Interface
Perform the following tasks to configure a CT1/PRI interface:
■
Enter the specified interface view
■
Bundle the timeslots on the interface into channel-sets
■
Bundle the timeslots on the interface into a pri-set
■
Set length/attenuation of the transmission cable
■
Set a line code format
■
Set line clock
■
Set frame format
■
Enable/Disable loopback
Entering the specified interface view
Perform the following in the System View to enter the specified CT1/PRI interface
view.
view.
Bundling the timeslots on the interface into channel-sets
Perform the following configuration in CT1/PRI interface view.
The timeslots on a CT1/PRI interface can be bundled into up to 24 channel-sets.
Only one timeslot bundling mode can be supported on a CT1/PRI interface during
a time period, that is, the timeslots on an interface can only be bundled into either
channel-sets or a pri-set in that period.
a time period, that is, the timeslots on an interface can only be bundled into either
channel-sets or a pri-set in that period.
After some timeslots on a CT1/PRI interface are bundled into a channel-set, the
system will automatically create a serial interface numbered
system will automatically create a serial interface numbered
serial
number:set-number
. This interface has the same logic features of synchronous
serial interfaces, and can be further configured as a synchronous serial interface.
Perform the following in the System View.
Table 181 Entering the specified CT1/PRI interface view
Operation
Command
Enter the specified CT1/PRI interface view
controller t1 number
Table 182 Bundling the timeslots on the interface into channel-sets
Operation
Command
Bundle the timeslots on the CT1/PRI
interface into a channel-set
interface into a channel-set
channel-set set-number timeslot-list
range [ speed { 56k | 64k } ]
range [ speed { 56k | 64k } ]
Remove the channel-set formed by
bundling the timeslots
bundling the timeslots
undo channel-set set-number