Re: (PM) AMI and B8ZS CT1s to same PM3?
John G. Thompson (jgt10@livingston.com)
Mon, 12 Jan 1998 13:11:06 -0800
At 01:45 PM 1/12/98 -0600, Kyle Platts wrote:
>Dick St.Peters wrote:
>>
>> I may need to run two CT1s to the same PM3, one B8ZS/ESF and one
>> AMI/D4. I haven't seen anything saying I can't do this, but I also
>> don't see anything that explicitly says I can.
>
>You're playing with fire.
>
>>
>> Looking for
>> .. Real-world success stories - as in "I'm doing this"
>> .. "It doesn't work" tales
>> .. RTFM pointers
>
>I was curious about this...so I took my PM3 and set up line0 as a
>point-to-point T1 to a Cisco router using AMI SF. I then set up line1 as
>a T1 going to a frame switch.
>
>Some interesting things happened. When configured as B8ZS/ESF,
>everything ran great. As soon as I changed it over to AMI, it wouldn't
>run. I continually tweaked settings and found that the link would come
>up with my CSU set to AMI/SF and 64k channels!! As soon as I moved it
>over to 56k channels, it would fall apart. Now for the fun part. When I
>was running 64k channels with AMI and SF, I continually saw excess
>zero's and far end alarms on my CSU. The PM3 reported bi-polar
>violations and loss of sync. I tried every possible combination and
>cannot get the link to come up and run without errors.
Kyle,
You write SF above, not D4. Is that correct? If so, it isn't surprising
as the ComOS doesn't support SF framing.
JGT
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