Bruce Enders wrote: > > The simplest way I know of to explain these is to take the last > letter > (O or S) and associate that to where it will connect TO. So, an > FXO > connects to an Office (PBX or CO) and an FXS connects to a > Station device > (Telephone, Fax, or answering machine).
The problem with that way of remembering it is that it contradicts what you say below. FXS connects TO FXO, not to a station. If you remember that a phone is not a station, in fact it's an FXO, then you won't get in trouble. > As Chuck suggests, if you are connecting from an "O" it will > connect to > an "S", and vice versa, just like DTE and DCE. (Remembering it > this way > comes in handy when you are connecting two PBXs, or PBX to CO, > or voice > gateway to PBX or CO). OBTW, that voice gateway is a > microscopic size > PBX. > Bruce > > Chuck's Long Road wrote: > > I did some quick looks into a couple of books I have to see > what they say. > > Scott Keagy's book "Integrating Voice and Data Networks" has > nothing to say > about FXO and FXS in particular. > > The "Cisco Call Manager Fundamentals" book makes the rather > brief assertion > that "FXS ports provide connection to loop-start or > ground-start telephone > lines, ... ( PBX ) ports, and other analogue telephone > devices. FXO ports > provide connection to central office ports or PBX extensions" > > Interesting wording, and seems to apply to what I was told. > > Learn something new, some better way to think about things, > every day. > > Chuck > > ""Jennifer Mellone"" wrote in message > [EMAIL PROTECTED]">news:[EMAIL PROTECTED] ... > > That sounds great and makes more sense now! I always like > reading your > > posts > > :-) > > I always confuse which device plugs into which port. I > remember it like > > this: > > Plug phone or "Station" into FXS (where Station=S) > Plug PBX/CO into FXO (where Office=0) > > - Jennifer > -- > > Bruce Enders Email: > [EMAIL PROTECTED] Chesapeake NetCraftsmen > o:(410)-757-3050, c:(443)-994-0678 > 1290 Bay Dale Drive, Suite 312 WWW: > http://www.netcraftsmen.net Arnold, MD 21012-2325 > Cisco CCSI# 96047 > Efax 443-331-0651 > > Message Posted at: http://www.groupstudy.com/form/read.php?f=7&i=54354&t=54331 -------------------------------------------------- FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]
