Re: PM3 E1 to E1 direct connection

Dave Cates (livingston@3lefties.com)
Thu, 28 Aug 1997 16:51:40 -0600

>Pssst - don't tell anyone, but if you have a dual T1/E1 box, if you have a
clock source on line 0, line 1 will use the incoming signal on line 0 as
the transmit clock source on line 1.
>
>I haven't been able to prove this, since I do not have a PM3, but it sure
looks like it behaves in this manner. I have brought this to LE's
attention, but have not heard anything back from them.

You are absolutely correct. We proved it when we had us west out here and
had one line span plugged in and had a T-bird plugged into the other and
saw a clock. The clock does "bleed over" that is why you have a problem
when using 2 different CO's for each span. We were trying to see if the
pm3 was in fact providing a clock. The problem is you do see some timing
slips.

Thanks in advance,
Dave Cates
I-NET of New Mexico
http://www.3lefties.com