cat /etc/chatscripts/provider
# This chatfile was generated by pppconfig 2.3.17.
# Please do not delete any of the comments.  Pppconfig needs them.
# 
# ispauth PAP
# abortstring
ABORT BUSY ABORT 'NO CARRIER' ABORT VOICE ABORT 'NO DIALTONE' ABORT 'NO DIAL TONE' ABORT 'NO ANSWER' ABORT DELAYED
# modeminit
'' ATZ
'' AT+CGDCONT=1,"IP","internet"
# ispnumber
OK-AT-OK "ATDT*99#"
# ispconnect
CONNECT \d\c
# prelogin

# ispname
# isppassword
# postlogin

# end of pppconfig stuff

cat /etc/NetworkManager/system-connections/Megafon 

[connection]
id=Megafon
uuid=87bc825e-a83c-4573-932c-b5bd253297b2
type=gsm
autoconnect=true
timestamp=0

[ppp]
noauth=true
refuse-eap=false
refuse-pap=false
refuse-chap=false
refuse-mschap=false
refuse-mschapv2=false
nobsdcomp=false
nodeflate=false
no-vj-comp=false
require-mppe=false
require-mppe-128=false
mppe-stateful=false
crtscts=false
baud=0
mru=0
mtu=0
lcp-echo-failure=0
lcp-echo-interval=0

[ipv4]
method=auto
ignore-auto-routes=false
ignore-auto-dns=false
dhcp-send-hostname=false
never-default=false

[gsm]
number=*99#
username=inet
password=inet
apn=internet
network-type=-1
band=-1
allowed-bands=1

[serial]
baud=115200
bits=8
parity=110
stopbits=1
send-delay=0