mikectrcdd
IS-IT--Management
I have to install a loopback for a DS3 data circuit. Is that just conect a piece of coax from transmit to receive on the LEC interface? thanks
Mike Maselli, RCDD
Mike Maselli, RCDD
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DS3 Coax Loopback
- Thread starter mikectrcdd
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AvayaNovice
Vendor
DS3? Coax? Maybe I'm in left field, but I would think a loopback would just be standard jumper cable?
I've been out of the field for awhile, but every DS3 I've done was coax. Usually brought in on fiber to an OCx Mux and dropped to DS3 level for transmission via 75 Ohm coax. Loopbacks were normally programmed at the edge devices.
So here's my question(s):
1.Is the hard loop (which is in fact done with a 75 Ohm coax patch cable) being done to test the edge devices?
2. Have there been developments that changed the DS3 media to something other than coax?
Richard S. King, RCDD/LAN/OSP
TKG Consulting Engineers, Inc.
So here's my question(s):
1.Is the hard loop (which is in fact done with a 75 Ohm coax patch cable) being done to test the edge devices?
2. Have there been developments that changed the DS3 media to something other than coax?
Richard S. King, RCDD/LAN/OSP
TKG Consulting Engineers, Inc.
randybreck
Technical User
I think it depends on the specific peice of equipment. I have noticed that some equipment may need an attenuator on the coax to prevent overdriving the input.
AvayaNovice
Vendor
What signal level, and at what frequency is this running?
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