alanlevy@ux1.cso.uiuc.edu (Alan Levy) (04/10/91)
I have a question. I have a USR Robotics Dual-standard 9600 Courier. I connect to another v42bis modem. But ever once in a while the modem disconnect, when I query as to the reason it disconnected, it says because LD received. What exactly does LD received mean? I do have call waiting, but I disable it before dialing. Alan LEvy alevy@uiuc.edu
ch@dce.ie (Charles Bryant) (04/11/91)
In article <1991Apr10.035712.4092@ux1.cso.uiuc.edu> alanlevy@ux1.cso.uiuc.edu (Alan Levy) writes: >But ever once in a while the modem disconnect, when I query as to the reason >it disconnected, it says because LD received. > >What exactly does LD received mean? It means `Link Disconnect' and it is one of the MNP frame types. It is sent in two circumstances: when the initial handshake fails, and when the number of retries becomes excessive. Depending on how it is implemented, the initial handshake may be vulnerable to noise. -- Charles Bryant (ch@dce.ie) -- If you like the opinions expressed in this message, they may be available for rent - contact your local sales office. Low interest deals available.
tnixon@hayes.uucp (04/12/91)
In article <1991Apr10.035712.4092@ux1.cso.uiuc.edu>, alanlevy@ux1.cso.uiuc.edu (Alan Levy) writes: > I have a USR Robotics Dual-standard 9600 Courier. > I connect to another v42bis modem. > But ever once in a while the modem disconnect, when I query as to the reason > it disconnected, it says because LD received. > What exactly does LD received mean? > I do have call waiting, but I disable it before dialing. It has nothing to do with Call Waiting. "LD" refers to the "Link Disconnection" frame in MNP. They probably haven't updated the documentation to reflect the fact that the frame is called "DISC" in LAPM instead of LD. Anyway, what it means is that the other modem sent a request to disconnect the line. This could be caused by a variety of things: the other computer told the modem to disconnect, the other modem detected a protocol violation, there were too many attempts to send a frame (due to repeated line errors), etc. -- Toby -- Toby Nixon, Principal Engineer | Voice +1-404-840-9200 Telex 151243420 Hayes Microcomputer Products Inc. | Fax +1-404-447-0178 CIS 70271,404 P.O. Box 105203 | UUCP uunet!hayes!tnixon AT&T !tnixon Atlanta, Georgia 30348 USA | Internet hayes!tnixon@uunet.uu.net
gandrews@netcom.COM (Greg Andrews) (04/12/91)
In article <1991Apr10.035712.4092@ux1.cso.uiuc.edu> alanlevy@ux1.cso.uiuc.edu (Alan Levy) writes: > >But ever once in a while the modem disconnect, when I query as to the reason >it disconnected, it says because LD received. > >What exactly does LD received mean? > It means your modem received a "Link Disconnect" packet from the other modem. The other modem told your modem to disconnect. -- .------------------------------------------------------------------------. | Greg Andrews | UUCP: {apple,amdahl,claris}!netcom!gandrews | | | Internet: gandrews@netcom.COM | `------------------------------------------------------------------------'