I need to order riser cable for home runs from each of 10 floors worth of office space. Each floor will have a 66m split block and the riser will be terminated on 66m split blocks at an MDF in the data center. The output of the voice gateway is an rj21x. I am told that the equipment is VoIp yet they want to use it for analog fax lines. I am aware that I need to order 25 pr cable. I have walked out the footages but, do I need to use an upgraded cable for the risers like cat 3 or 5. Is there plain old voice cable. What is it called?
Thanks for the assistance.

Not sure I follow you with what you are doing but to answer your question, CAT3 is "plain old voice cable".

-Hal

First, are you saying you will be creating 9 IDFs with just 1 50 pair 66M in each? Assuming you want to isolate a side with bridge clips that leaves just just 25 pair per floor. A 10 story building is a large affair and I assume probably around 25 thousand square feet or more per floor. You're going to run out of capacity real fast. They may say they want to use them only for FAX lines but trust me, they'll want to use a combination of IP and PBX phones.

You need to ask how many of the VG 224s will be used. 1 gives you 24 analog lines and resides behind a router. So the lines are analog but the box is an IP gateway.

You will need to use CAT3 25 pair trunk cable but I'd certainly pull at least 2 runs per floor and run them to the MDF so you'd need a board with 18 66Ms on it plus 1 for the VG224 and more for however you want to handle the floor with the MDF.

A VG224/248 has a ethernet (RJ-45) and at least one female amphenol plug on it. ALWAYS upgrade the firmware on the box (even if it is brand new) as they always have older firmware on them. The wiring is straight down WHT/BLU port 1 and VIO/BRN is port 24.

Thanks for the replys. You have been of great help.