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Я пытаюсь подключиться к Интернету с помощью модуля SIM7600 — https://www.waveshare.com/sim7600e-h-4g-hat.htm

Используется следующее chat и dial файлы:

 pi@raspberrypi:~ $ sudo pppd call dial
abort on (BUSY)
abort on (NO ANSWER)
pi@raspberrypi:~ $ cat /etc/ppp/chat
# 
# chat script 
# 
# 
        ABORT           'BUSY'
        ABORT           'NO ANSWER'
        ABORT           'NO CARRIER'
        ABORT           'NO DIALTONE'
        ABORT           'nRINGINGrnrnRINGINGr'
        SAY                     "modem init: press <ctrl>-C to disconnectn"


        ''              '   ATH'
#       OK              'ATZ'
#       OK              'ATQ0 V1 E1 S0=0 amp;C1 amp;D2  FCLASS=0'
#       OK              'AT IFC=0,0'
#       OK              'ATamp;W'
        SAY             "Before Connectingn"

#       OK              'AT CSOCKAUTH=,,"WAP@WAP",""'
        OK              'AT CGDCONT=1,"IP","AIRTELWAP.ES"'
        SAY             "n   defining PDP contextn"

#       OK              'ATD#777'
        OK              'ATD*99#'
        SAY             "Number Dialledn"

#       OK              'AT CGATT=1'
        SAY             "n   attaching"
# simcom
#       OK              'AT CIPSTART'
#       SAY             "n   attaching to GPRS"

        SAY             "n   requesting data connection"
#       CONNECT         ''
        CONNECT         dc
        SAY             "n   connected"
pi@raspberrypi:~ $ sudo cat /etc/ppp/peers/dial
#
# pppd options
#
modem
debug
#logfile /var/ppplog 
nodetach 
/dev/ttyUSB2
115200
receive-all
#defaultroute
noipdefault
-chap
usepeerdns
#mtu 1500
-crtscts
ipcp-accept-local
ipcp-accept-remote
lock
#nodeflate
noauth
novj
nobsdcomp
novjccomp
nopcomp
noaccomp
asyncmap 0
user "WAP@WAP"
password ""

#lcp-echo-failure 0
#lcp-echo-interval 0

# Chat scripts
connect "/usr/sbin/chat -v -s -f /etc/ppp/chat"
 

Но отключение модема после аутентификации:

 abort on (BUSY)
abort on (NO ANSWER)
abort on (NO CARRIER)
abort on (NO DIALTONE)
abort on (nRINGINGrnrnRINGINGr)
modem init: press <ctrl>-C to disconnect
send (   ATH^M)
Before Connecting
expect (OK)
ATH^M^M
OK
 -- got it

send (AT CGDCONT=1,"IP","AIRTELWAP.ES"^M)

   defining PDP context
expect (OK)
^M
AT CGDCONT=1,"IP","AIRTELWAP.ES"^M^M
OK
 -- got it

send (ATD*99#^M)
Number Dialled

   attaching
expect (CONNECT)ta connection
^M
ATD*99#^M^M
CONNECT
 -- got it

send (d)

Script /usr/sbin/chat -v -s -f /etc/ppp/chat finished (pid 21132), status = 0x0
Serial connection established.
using channel 5
Using interface ppp0
Connect: ppp0 <--> /dev/ttyUSB2
sent [LCP ConfReq id=0x1 <asyncmap 0x0> <magic 0x6956f661>]
rcvd [LCP ConfReq id=0x13 <asyncmap 0x0> <auth chap MD5> <magic 0xd148b499> <pcomp> <accomp>]
sent [LCP ConfRej id=0x13 <pcomp> <accomp>]
rcvd [LCP ConfAck id=0x1 <asyncmap 0x0> <magic 0x6956f661>]
rcvd [LCP ConfReq id=0x14 <asyncmap 0x0> <auth chap MD5> <magic 0xd148b499>]
sent [LCP ConfNak id=0x14 <auth pap>]
rcvd [LCP ConfReq id=0x15 <asyncmap 0x0> <auth pap> <magic 0xd148b499>]
sent [LCP ConfAck id=0x15 <asyncmap 0x0> <auth pap> <magic 0xd148b499>]
sent [LCP EchoReq id=0x0 magic=0x6956f661]
sent [PAP AuthReq id=0x1 user="WAP@WAP" password=<hidden>]
rcvd [LCP DiscReq id=0x16 magic=0xd148b499]
rcvd [LCP EchoRep id=0x0 magic=0xd148b499 69 56 f6 61]
rcvd [PAP AuthAck id=0x1 ""]
PAP authentication succeeded
sent [IPCP ConfReq id=0x1 <addr 0.0.0.0> <ms-dns1 0.0.0.0> <ms-dns2 0.0.0.0>]
Modem hangup
Connection terminated.
 

I have added nodeflate to /etc/ppp/options file to disable compression.

Does anyone have same issue with this modem?