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Conference irocz::terminal_servers

Title:Terminal Servers
Notice:See Note 2 for Directory of important notes. Please use keywords.
Moderator:LAVC::CAHILLON
Created:Tue May 14 1991
Last Modified:Fri Jun 06 1997
Last Successful Update:Fri Jun 06 1997
Number of topics:3547
Total number of notes:12300

3434.0. "Ds700 how telnet data acquisition" by ROMTSS::MATTACCHIONE () Wed Feb 05 1997 07:59

Hi,

we are attempting to use a DS700 with telnet protocol for binary data 
acquisition throught rs-232 line communication.
On one port of this terminal server, configured with an TCP/IP address, is 
defined a telnet listener to allow connections via telnet.
We built a software process running on a VAX host that connects to the terminal 
server port via telnet, but the process cannot read all the stream sent 
through the rs-232 line.
The problem is that some characters as <FF> or 00 are filtered by DS700
with unusable acquisition sequence.

The port configuration is:

Flow Control: DSR
Signal Control:Enabled
Default Protocol:Telnet
Input speed:19200
Outputspeed:19200
Type: Soft

Enabled characteristics:
Output flow control,Input flow control.

Anyone have made a similar operation with a DS700?
Is there an alternative  solution to the DS700 terminal server for binary data
acquisition through a rs-232 line using as protocol TCP/IP?

Thanks in advance 
Gabriele
T.RTitleUserPersonal
Name		DateLines
3434.1IROCZ::D_NELSONDave Nelson LKG1-3/A11 226-5358Wed Feb 05 1997 11:2911
RE: .0

Which DECserver?  How much RAM?  If you can run DNAS, we now support "raw"
TCP listeners.  This is totally binary transparent, and does not need a 
Telnet application at the VAX, just basic socket I/O calls.  This is a
better way to go for data acquisition.

Regards,

Dave