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How do I tell how my 302A attendant console is powered? 3
- Thread starter obukev
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highspeedcomm
Vendor
- Aug 21, 2008
- 2
there should be a local power supply near by. You can look at the jack and tell, there will be an adapter that brings out the wh/br pair to supply power. If not, you can look at the port in the MDF, look at the station wire(4th pair will have jumper ran to power supply in MDF.
- Thread starter
- #5
OK... here is what I see in the MDF. The person that handles the wiring of each extension from the MDF has no documentation as to where the console is punched down. The port for the console in the switch is 01A0301, and I found a cable on the wall attached to a 66 block that says Aux 01. On that block there are 6 connections in a row on the right hand side of the block that reads:
-48
G
-48
G
-48
D
(I hope I remembered that right)
The connection at the console is a cat5 jack with cat3 cable being used and punched down to 568B standards using only the orange and green pairs. That tells me that the phone connection needs only 123 and 6 to work, leaving the blue and brown pair unused. I am guessing just from looking at the console jack that I am phantom powered.
Now... how do I change from phantom powered to locally powered. Are there settings in the switch to change? Do I need to rewire anything at the MDF?.....at the console? Where do I go from here? Am I asking the right questions?... too many of them?
-48
G
-48
G
-48
D
(I hope I remembered that right)
The connection at the console is a cat5 jack with cat3 cable being used and punched down to 568B standards using only the orange and green pairs. That tells me that the phone connection needs only 123 and 6 to work, leaving the blue and brown pair unused. I am guessing just from looking at the console jack that I am phantom powered.
Now... how do I change from phantom powered to locally powered. Are there settings in the switch to change? Do I need to rewire anything at the MDF?.....at the console? Where do I go from here? Am I asking the right questions?... too many of them?
- Thread starter
- #7
OK... I can do that.
Just to make sure then... how many pairs are needed for the console itself?
If it is using Phantom power now, and I put 48VDC on the brown pair, will it cause an over-voltage condition?
I guess what would answer my question here is a pinout for the connection to the 302A console.
Does anyone know where I could find one of those?
Just to make sure then... how many pairs are needed for the console itself?
If it is using Phantom power now, and I put 48VDC on the brown pair, will it cause an over-voltage condition?
I guess what would answer my question here is a pinout for the connection to the 302A console.
Does anyone know where I could find one of those?
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- #8
mikeydidit
IS-IT--Management
This may be a little overkill for your application, but this is what I did here.
I had all 5 of ours running off the aux pack (like yours are) and it was right at the distance of limitations around 500 feet from the switch. I would have intermittent problems with the consoles loosing their displays. In this case I have a MDF right under the switch board. I ran new cables to a 66 block and laid the power down on the Brown pairs. I had the power strip plugged into a little 500kva ups. Guess what? No more problems.
The 302 A,B consoles are cabled like the 7400 series sets. You would use the white orange white green pairs. The C's and newer are set up as a single pair setup and use the white blue. Wire the power to pins 7 & 8 (white brown pair) like dwalin has said, and you should be good.
It would be easier to do this using a regular USOC RJ 45 jack as it is straight through. The Cat 5E jacks if I remember right you have to reverse the brown pairs to get the voltage on the console.
"A people that values its privileges above its principles soon loses both."
- Dwight D. Eisenhower (1890-1969), Inaugural Address, January 20, 1953
For the best response to a question, read faq690-6594
I had all 5 of ours running off the aux pack (like yours are) and it was right at the distance of limitations around 500 feet from the switch. I would have intermittent problems with the consoles loosing their displays. In this case I have a MDF right under the switch board. I ran new cables to a 66 block and laid the power down on the Brown pairs. I had the power strip plugged into a little 500kva ups. Guess what? No more problems.
The 302 A,B consoles are cabled like the 7400 series sets. You would use the white orange white green pairs. The C's and newer are set up as a single pair setup and use the white blue. Wire the power to pins 7 & 8 (white brown pair) like dwalin has said, and you should be good.
It would be easier to do this using a regular USOC RJ 45 jack as it is straight through. The Cat 5E jacks if I remember right you have to reverse the brown pairs to get the voltage on the console.
"A people that values its privileges above its principles soon loses both."
- Dwight D. Eisenhower (1890-1969), Inaugural Address, January 20, 1953
For the best response to a question, read faq690-6594
- Thread starter
- #9
I found this on ebay. It is a 48V .4A power supply from lucent....
Will this work:
Will this work:
- Thread starter
- #11
Thanks so much for everyones help. My job requires... like a lot of you... an office with many "hats", and this is one that I am relatively new at. I think I could pass a google certification in a heartbeat. I really appreciate all of you who dedicate some of your time for people who need you like me....
Kudos to all
obukev
Kudos to all
obukev
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