What is a CSNA circuit for?

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What is a CSNA circuit for? #645752 12/14/23 04:08 PM
Joined: Jan 2005 Posts: 15,390 Likes: 14 Fayetteville, NC EV607797 Moderator-Vertical, Vodavi, 1A2, Outside Wire
EV607797 Moderator-Vertical, Vodavi, 1A2, Outside Wire Joined: Jan 2005 Posts: 15,390 Likes: 14 Fayetteville, NC	I received a call from a customer asking for help in identifying a circuit that has an ID beginning with 36CSNA..... She thinks it is some kind of point to point circuit since two separate addresses are referenced on the bill for the same number. Does anyone have any idea what type of circuit this might be and what it might be used for? Ed Vaughn, MBSWWYPBX

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Re: What is a CSNA circuit for? EV607797 #645753 12/14/23 06:03 PM
Joined: Dec 2007 Posts: 6,825 Likes: 22 Canby, Oregon Professor Shadow Retired Admin
Professor Shadow Retired Admin Joined: Dec 2007 Posts: 6,825 Likes: 22 Canby, Oregon	The first 2 numbers are a Prefix. The CSNA is the Service Code and Modifier. If the next sequence is more than 3 digits that is a serial number OR if it is 3 digits...that is the NPA followed by /NXX/LINE If, I remember correctly. It is possible the CS means Digital Cross System and NA is the Modifier. HOWEVER... ¯\_(ツ)_/¯ Dean Photographs: https://www.instagram.com/deanwilsoncanby/ https://fstoppers.com/profile/deanwilsoncanby https://www.facebook.com/Dean-Wilson-Photography-112841337020414 _________________________________________________________________________________________ Retired: That means I don't have a job description and I can do what I want.

Re: What is a CSNA circuit for? Professor Shadow #645754 12/14/23 06:12 PM
Joined: Jan 2005 Posts: 15,390 Likes: 14 Fayetteville, NC EV607797 Moderator-Vertical, Vodavi, 1A2, Outside Wire
EV607797 Moderator-Vertical, Vodavi, 1A2, Outside Wire Joined: Jan 2005 Posts: 15,390 Likes: 14 Fayetteville, NC	Thanks, Dean. I'm very familiar with circuit ID components. I've just never seen one with the "CSNA" circuit identifier part, nor has my customer. They're paying a hefty monthly rate to Verizon for it in DC for an address that is less than a block away. I'm thinking it's old and abandoned (pre-IP) technology. Bell Atlantic toyed with a product they called "CO LAN" in the early 90s, and I think this might be a remnant of it. Ed Vaughn, MBSWWYPBX

Re: What is a CSNA circuit for? EV607797 #645756 12/14/23 11:54 PM
Joined: May 2002 Posts: 17,731 Likes: 25 Western Nebraska justbill Member
justbill Member Joined: May 2002 Posts: 17,731 Likes: 25 Western Nebraska	Don't know if this will help Ed, I used to know this stuff, to damn old to remember, but this is what I found on the internet. I know it's a private line circuit, but that's about it. The 36 indicates a LEC ID. CSNA For AT&T Network Connection accounts. Select either CSNA (domestic) or CSNR (domestic and international) to trigger unique call processing. CSNA or CSNR cannot be standalone Subscribed Services on a TSG; either SDN or Toll Free Megacom must also be ordered with the CSNA/CSNR Trunk Sub Group. The information was found here Retired phone dude

Re: What is a CSNA circuit for? EV607797 #645757 12/15/23 09:55 AM
Joined: May 2007 Posts: 5,058 Likes: 5 NYC Silversam Moderator-1A2, Cabling
Silversam Moderator-1A2, Cabling Joined: May 2007 Posts: 5,058 Likes: 5 NYC	Good catch, Bill! Ed - If it's not red capped, have you thought about disconnecting it and see what happens? Or go to the other end and see if there's really something connected there.... Sam "Where are we going and why are we in this hand basket?"