I am installing a line-side T-1 card and trying to extend it over the 655' limit to another building (about 1000') using our copper/fiber and a couple different types of T-1 extenders. We are currently using a 4-port fiber extender from Rad-Direct and it works great for regular T-1's from the CO but not the line-side. I have a line side T-1 card in place now but it is in the same room as the server it connects to and it works fine. I have also tried an old pair of Pairgain Campus T-1 extenders with no luck also. Any idea's?
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Line-Side T-1 Card
- Thread starter jjinkins
- Start date
telecom116
MIS
Have you tried rolling your transmit and receive pairs on your connections to the muxes on one or both ends? Do you get any indication (alarm, LOS, etc.) on the fiber mux?
Note that the lineside card outputs at the DSX-1 level; you may have to change some settings to make the mux run at these signal levels rather than normal T1 levels - you may be overdriving equipment on either end.
Note that the lineside card outputs at the DSX-1 level; you may have to change some settings to make the mux run at these signal levels rather than normal T1 levels - you may be overdriving equipment on either end.
- Thread starter
- #3
The mux's come up fine. We have flipped xmit and rcv. It's the equipment on either end, the line-side card and the dialogic card in the server that won't come up. As far as the levels, the Campus T-1 extenders are DSX-1 and the fiber mux's aren't programmable.
telecom116
MIS
When you say you've flipped xmit and rcv, I'm assuming you tried this on the copper DSX-1 connection from your Dialogic and Line Side card to the mux.
When you use the Campus T1 unit to either the Line side or the Dialogic, are you able to get the LOS alarms off?
When you use the Campus T1 unit to either the Line side or the Dialogic, are you able to get the LOS alarms off?
with a t1, unlike digital phones you can gain distance by doubling your cable pairs... i have gotten close to 2000 ft local by using 4 transmit pairs and in an seperate binder 4 rec pairs.. i also add at least 4 grounded pairs between then.. that act's a lot like the old t-screen cable made for that job..
john poole
bellsouth business
columbia,sc
john poole
bellsouth business
columbia,sc
telecom116
MIS
By factory default the Campus T1 units have RCV on pins 4-5, and XMT on 1-2. The Dialogic has these swapped. If you pull the RJ45 (eh, RJ48C) and plug it in to the Campus T1 (and possibly the RAD - I don't have their pinouts), they may or maynot work without rolling the pairs. Sane thing with the other end of the mux or extender.
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