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Terminal 'Local Echo' lost on Modem Dial-out
Post 19414 by mybeat on Thursday 11th of April 2002 04:15:48 AM
04-11-2002
Terminal 'Local Echo' lost on Modem Dial-out
Can anybody help me?
I am developing a utility for automating message paging to a BT alphanumeric pager.
I am using a USR 56K Fax-modem connected to /dev/cuab on a Sun Ultra-10. I am using the UNIX 'tip' utility to connect to the modem and I have configured the modem as follows: Baud Rate: 1200, Parity: even, Data Bits: 7, Start Bits: 1, Stop Bits: 1, Flow Control: XON/XOFF, Error Correction: off. Note: these settings are specified by the BT Paging Service which uses the TAP protocol standard.
The problem that I am seeing is as follows:
I fire up tip and connect to the modem OK, but after issuing the Hayes command to dial the paging service, e.g. ATX0DT<PHONENUMBER>, I lose local echo on the terminal window I am using. Note, however, that I can successfully connect to the paging service and can successfully send a message to a pager. However, this is done by blindly typing the TAP commands into the window (very quickly to avoid a timeout!) once I have connected to the paging service. Moreover, I also lose the capability of cut&pasting the Hayes/TAP commands into the terminal window.
It is very important that I get local echo working as I want to automate the complete process using Expect. I appreciate that I could use Kermit to do the job for me, but I have come so far with this that I just want to complete it.
I have tried Solaris 2.6/7/8 and experience the same problem on each OS. Also, the problem occurs under both Openlook and CDE.
I read somewhere that 'tip' sometimes has problems when used in terminal windows that have scrollbars. Therefore, I have been using a shell tool with no scrollbar.
I have also tried various different terminal types notably: vt100, xterm, sun-cmd, AT386.
Any ideas?
Thanks in advance.
I am developing a utility for automating message paging to a BT alphanumeric pager.
I am using a USR 56K Fax-modem connected to /dev/cuab on a Sun Ultra-10. I am using the UNIX 'tip' utility to connect to the modem and I have configured the modem as follows: Baud Rate: 1200, Parity: even, Data Bits: 7, Start Bits: 1, Stop Bits: 1, Flow Control: XON/XOFF, Error Correction: off. Note: these settings are specified by the BT Paging Service which uses the TAP protocol standard.
The problem that I am seeing is as follows:
I fire up tip and connect to the modem OK, but after issuing the Hayes command to dial the paging service, e.g. ATX0DT<PHONENUMBER>, I lose local echo on the terminal window I am using. Note, however, that I can successfully connect to the paging service and can successfully send a message to a pager. However, this is done by blindly typing the TAP commands into the window (very quickly to avoid a timeout!) once I have connected to the paging service. Moreover, I also lose the capability of cut&pasting the Hayes/TAP commands into the terminal window.
It is very important that I get local echo working as I want to automate the complete process using Expect. I appreciate that I could use Kermit to do the job for me, but I have come so far with this that I just want to complete it.
I have tried Solaris 2.6/7/8 and experience the same problem on each OS. Also, the problem occurs under both Openlook and CDE.
I read somewhere that 'tip' sometimes has problems when used in terminal windows that have scrollbars. Therefore, I have been using a shell tool with no scrollbar.
I have also tried various different terminal types notably: vt100, xterm, sun-cmd, AT386.
Any ideas?
Thanks in advance.
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LEARN ABOUT MINIX
term
TERM(1) General Commands Manual TERM(1) NAME
term - turn PC into a dumb terminal [IBM] SYNOPSIS
term [baudrate] [parity] [bits_per_character] [-dial_string] [device] EXAMPLES
term 2400 # Talk to modem at 2400 baud term 1200 7 even # 1200 baud, 7 bits/char, even parity term 8 9600 /dev/tty01 # 9600 baud, 8 bits/char, no parity, use tty01 term -atdt12345 /dev/tty01 # Start with a command to dial out DESCRIPTION
Term allows MINIX to talk to a terminal or modem over RS232 port 1. The program first sets the baudrate, parity and character length, and then forks. The parent sits in a loop copying from stdin (usually the console's keyboard), to the terminal or modem (/dev/tty00). The child sits in a loop copying from the terminal or modem (/dev/tty00) to standard output. Thus when RS232 port 1 is connected to a modem, every keystroke typed on the keyboard is sent to the modem, and every character arriving from the modem is displayed. Standard input and output may be redirected, to provide a primitive file transfer program, with no checking. Any argument that starts with a minus ('-') is sent out to the modem, usually to dial out. Term accepts several commands that are formed by typing the escape character, CTRL-], and a letter. Type CTRL-]? to see a list of commands. The subshell command is very important, it allows you to type in a ZMODEM command to transfer data. Do not quit term to do this, or your modem line will be reset! Term keeps the modem line open on file descriptor 9 while running the subshell, so you can type <&9 >&9 at the end of your ZMODEM command to connect it to the modem. Important note: to use term, it is essential that /etc/ttytab is configured so that there is no shell hanging on /dev/tty01. If there is, both the shell and term will try to read from /dev/tty01, and nothing will work. SEE ALSO
rz(1), sz(1). TERM(1)