From: lee@hsh.com (Lee Havemann)
Newsgroups: comp.dcom.modems
Subject: Re: HELP! ZyXEL on DECserver woes
Date: 17 Dec 92 15:25:48 GMT
Organization: HSH Associates

In article <of=VfRi00WB5QzQkYq@andrew.cmu.edu>, vz22+@andrew.cmu.edu (Valdis J. Zeps) writes:
> Hello all,
> 
> We have a ZyXEL U-1496E connected to a DECserver 200 mostly for dialup,
> but on occasion used for dial-out, as well. For the most part, the setup
> listed below works, except for one major problem. If one dials-in to the
> modem, and then goes back to local (ie- +++) then reconnecting with ATO
> doesn't work. When I look at the lights on the front of the ZyXEL (we have
> another modem so I can dial into the server from the same room), I see
> that the RTX/STX lights start flickering like mad at the moment that I go to
> local mode. This appears to go on indefinitely, but if I walk away from it, 
> it appears to restore itself after some amount of time (on the order of 
> hours). Has anybody else had this kind of problem? I've tried all kinds of 
> settings for the port (ie- modem control, flow control, dsrlogout, etc.) and
> for the modem (ie- &s0/1, &h0/3/4, various S registers...) but nothing seems
> to change this symptom. I've listed the settings that we have for bith the
> server and the modem, any help on this would be greatly appreciated. 
> 
> -Valdis Zeps
> 

The DECserver 200 M/C series have a bug with the ACCESS DYNAMIC setting. It
sometimes causes the problems you describe. The fix? use it as Access Local 
only, and dial out somewhere else.

> ----------------------------------------------------------------
> DECserver 200 settings are:
> 
> Port 4:  MODEM
> 
> Character Size:            8           Input Speed:       19200
> Flow Control:            CTS           Output Speed:      19200
> Parity:                 None           Modem Control:   Enabled
> 
> Access:              Dynamic           Local Switch:       None
> Backward Switch:           {           Name:              MODEM
> Break:                 Local           Session Limit:         4
> Forward Switch:            }           Type:               Ansi
Deleted non-essentiol stuff....
> Enabled Characteristics:
> 
> Autoprompt,  Broadcast,  DSRlogout,  Input Flow Control,
> Loss Notification,  Message Codes,  Output Flow Control,  Ring,
> Verification

DS 200's should be set to flow control: XON - they still honor CTS.

DSR logout should not be enabled. If you set privs on your session, and do a 
help set port dsrlogout, you will see the following:

 This port characteristic lets the server automatically log out a non-modem
controlled port when the device is powered off. this characteristic may be 
used only with MODEM CONTROL disabled. When MODEM CONTROL is enabled, this 
function is performed as part of the normal modem interaction.

Dump the RING, also, you shouldn't need it, and it will cause problems too.

You should also make sure that the server is running at least V3.0 of the 
DS200 software also.

Below is my DS200 settings, works fine with a Telebit Qblazer modem set with 
CSR flow control, no result codes, etc. I will post my Qblazer settings 
below also...

LT2001_local> sho port


Port 3: LT2001                         Server: LT2001

Character Size:            8           Primary Speed:     19200
Flow Control:            XON           Alternate Speed:   19200
Parity:                 None           Modem Control:   Enabled

Access:                Local           Local Switch:       None
Backwards Switch:       None           Name:             PORT_3
Break:                 Local           Session Limit:         4
Forwards Switch:        None           Type:               Soft

Preferred Service: HSH11A

Authorized Groups:   0
(Current)  Groups:   0

Enabled Characteristics:

Autoprompt,  Broadcast,  Dialup,  Inactivity Logout,  Input Flow Control,
Loss Notification,  Message Codes,  Output Flow Control,
Remote Modification,  Security,  Verification

LT2001_local> sho port status


Port 3: LT2001                         Server: LT2001

Access:         Local                  Current Service:
Status:    Local mode                  Current Node:   
Sessions:           0                  Current Port:   

Input XOFFed:      No                  Output Signals: DTR, RTS
Output XOFFed:     No                  Input Signals:  CD, CTS, DSR




at&v
QBlazer - Version MA1.01  - Active Configuration
B1 E1 L2 M0 Q1 T V1 X2 Y0 &C2 &D3 &G0 &R3 &S0 &T4 
S000:1   S001=0   S002=43  S003=13  S004=10  S005=8   S006=2   S007=40 
S008=2   S009=6   S010=14  S011=70  S012=50  S018=0   S025=5   S026=1  
S038=0   S041=0   S047=4   S048=0   S050=0   S051:5   S056=17  S057=19 
S058:2   S059=0   S060=0   S061=1   S062=15  S063=0   S064=0   S068=255
S069=0   S094=1   S100=0   S102=0   S180=2   S181=1   S183=30  S190=1  
S255=0  


-- 

 Lee Havemann, Comp Ops Dir.    HSH Associates      (201) 838-3330 
 Internet: lee@hsh.com    Compuserve: 70410,3507    AOL: HSH Assoc
 "Any opinions expressed are not necessarily those of anyone else, 
  including myself."                     
Newsgroups: comp.dcom.modems,comp.sys.sun.hardware,comp.sys.sun.admin,cu.sun.managers