majid@majid-desktop:~$ sed 's/ttyS2/ttySL0/g' /etc/ppp/peers/OMIDAN | sudo tee /etc/ppp/peers/OMIDAN
[sudo] password for majid:
# This optionfile was generated by pppconfig 2.3.17. 
# 
#
hide-password 
noauth
connect "/usr/sbin/chat -v -f /etc/chatscripts/OMIDAN"
debug
 /dev/ttySL0
115200
defaultroute
noipdefault 
user "BIST148994VHET"
remotename OMIDAN
ipparam OMIDAN

usepeerdns

majid@majid-desktop:~$ pon OMIDAN
majid@majid-desktop:~$ plog 
Mar 19 01:06:37 majid-desktop chat[5426]: abort on (DELAYED)
Mar 19 01:06:37 majid-desktop chat[5426]: send (ATZ^M)
Mar 19 01:06:37 majid-desktop chat[5426]: expect (OK)
Mar 19 01:06:37 majid-desktop chat[5426]: ATZ^M^M
Mar 19 01:06:37 majid-desktop chat[5426]: OK
Mar 19 01:06:37 majid-desktop chat[5426]:  -- got it 
Mar 19 01:06:37 majid-desktop chat[5426]: send (ATDT9716420^M)
Mar 19 01:06:37 majid-desktop chat[5426]: expect (CONNECT)
Mar 19 01:06:37 majid-desktop chat[5426]: ^M
Mar 19 01:06:37 majid-desktop chat[5426]: ATDT9716420^M^M
majid@majid-desktop:~$