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sup-network
Beginner

VG248 FXS ports to punch down block

Please forgive my nieveity on this, particularity the analog side of the question.

We are looking into a way to remove all the remaining POTS lines from our building. Currently, the only lines that remain in use are Fax, Modem, and direct dial buttons for emergency service in elevators. All of our other phones are run off of call manager 5.1 on SCCP protocol.

I was looking over the VG248 and it would appear to be the solution to bring the analog lines over; however, there is one caveat I am having a hard time finding an answer to.

Currently, all of our Centrex/Pots lines come in to a punch down demark from our analog line voice provider. They then go to a second punch down block before going off to various phone closets in the building for distribution. We do not have a PBX or legacy voice mail systems as any of those tasks are handled by the provider.

Retaining the current numbers is not needed, nor any of the other services that may been on those lines needed, as they could be generated/configured similarly once in call manager.

The VG248 uses FXS out ports for the lines and this is where my problem lies. I cannot seem to find how one would convert the FXS outputs to link them to the punch down block that leads out into the building. If at all possible we are looking to keep the current phone wiring that runs throughout the building from the second punch down block outward.

Any help you could provide in pointing me in the right direction would be greatly appreciated.

-John

1 ACCEPTED SOLUTION

Accepted Solutions
Rob Huffman
Hall of Fame Community Legend

Hi John,

Excellent question here! We use a number of VG248's and really like the product. The way that they "wire out" with RJ21 25 pair cables really fits nicely into most wiring infrastructures.

You can order most any length of pre-made 25pr cable that will connect to the Front Panel of the VG248 and can be routed right to the existing cross-connect (punch down blocks) or you can terminate (on punch down blocks, Bix,110 Blocks,R266) the VG248 25 pr cables in a Central location and run a new Tie Cable or Cables to the existing cross-connect. The "old" Analog circuits can be traced and new connctions to the VG248 can easily replace them pair for pair, circuit for circuit. This is nice for a "phased" approach :)

We have migrated hundreds of Analog lines from Nortel to the VG248 in just this manner. Using the type of cable listed below;

Cisco RJ21 Cables

http://www.stonewallcable.com/product.asp?dept%5Fid=102&pf%5Fid=SC%2D9754

Hope this makes sense!

Rob

View solution in original post

3 REPLIES 3
Rob Huffman
Hall of Fame Community Legend

Hi John,

Excellent question here! We use a number of VG248's and really like the product. The way that they "wire out" with RJ21 25 pair cables really fits nicely into most wiring infrastructures.

You can order most any length of pre-made 25pr cable that will connect to the Front Panel of the VG248 and can be routed right to the existing cross-connect (punch down blocks) or you can terminate (on punch down blocks, Bix,110 Blocks,R266) the VG248 25 pr cables in a Central location and run a new Tie Cable or Cables to the existing cross-connect. The "old" Analog circuits can be traced and new connctions to the VG248 can easily replace them pair for pair, circuit for circuit. This is nice for a "phased" approach :)

We have migrated hundreds of Analog lines from Nortel to the VG248 in just this manner. Using the type of cable listed below;

Cisco RJ21 Cables

http://www.stonewallcable.com/product.asp?dept%5Fid=102&pf%5Fid=SC%2D9754

Hope this makes sense!

Rob

Thank you, this is exactly what I was looking to find out.

-John

Rob Huffman
Hall of Fame Community Legend

Hi John,

Great stuff! I kind of lost myself there with that description so I'm glad it made some sense :) As I said this is one of the nicer products to work with.

I forgot to mention the RJ21 Cable needs to be ordered with a "Male" connector.

Thanks again,

Rob

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