CEoIP with RTT less than 1 ms

Unanswered Question
Aug 27th, 2008
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Hi,


Got Issues with a unframed CEM setup between 2 PBX.


I'm not a PBX tech, however, my boys says that when they shut a B channel down on 1 side, the other side see nothing and it should.


Do I have to run "framed" mode CEM to get this to work ? In framed mode, Nortel PBX complaint with weird errors


2nd issues is:

I have also fews slips on the PRI incrementing.


My Clocking is setup like:

CO->PBX->ROUTER01-ROUTER02->PBX


In router 01 i'm setup this way:

clock source line primary


In router 02 i'm setup this way:

clock source adaptive 1 closed-loop


I have seend adjustment of the clock. Guys reported no slip for 30min.. however, not sure If I'm using the correct setup ???




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lstoked Wed, 09/10/2008 - 05:54
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I've got the similar setup. Option 81->3845 CEM->Network->2811 CEM->Option 11.


I had loss of frame errors when I was setup for unframmed. My config is below.


Host

controller T1 1/0

framing esf

cem-group 0 timeslots 1-24

cablelength short 110

description CEM

!

cem 1/0/0

dejitter-buffer 80

xconnect 10.255.255.1 0 encapsulation udp

local ip addr 10.255.255.20

local udp port 15901

remote udp port 15901

!

Remote


controller T1 1/0

framing esf

cem-group 0 timeslots 1-24

clock source adaptive 0 closed-loop

cablelength short 110

description CEM

!

!

cem 1/0/0

dejitter-buffer 80

xconnect 10.255.255.1 0 encapsulation udp

local ip addr 10.255.255.20

local udp port 15901

remote udp port 15901

!



5mgagnon Wed, 09/10/2008 - 06:01
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Thanks, I still run unframed. however i've started data-protection mode, ceoip crc check.


its running clean for a week and half.


I've try framed configuration, and pbx guys, start seeing weird error in PBX. I just revert back. I'm not sure why.



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