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Extend 3com NBX over T1 Point-to-Point with Cisco 1721

Posted on 2009-04-02
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Last Modified: 2012-05-06
Is there a way to extend a 3com nbx system over a point-to-point t1 line? i have two cisco 1721 (with csu/dsu wic), one for each end... there will be no other traffic over this line. it is for phone only. any help or hints would be greatly appreciated.
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Question by:kommgroup
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by:kommgroup
ID: 24050137
would terayon bwx1 units do the job better than the cisco 1721? does anyone have any familiarity with the bwx1?
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kommgroup earned 0 total points
ID: 24107993
I have resolved this by setting up the cisco 1721 units in transparent bridging mode (use the following config on both):

conf t
config-register 0x2102
no ip routing
bridge 1 protocol ieee
interface serial0
bridge-group 1
no shutdown
exit
interface fastethernet0
bridge-group 1
no shutdown
end

be sure to save to startup config:

copy run start
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