root@12005350:/real# pppd call quectel-pppd &
[1] 26051
root@12005350:/real# pppd options in effect:
debug		# (from /etc/ppp/peers/quectel-pppd)
nodetach		# (from /etc/ppp/peers/quectel-pppd)
dump		# (from /etc/ppp/peers/quectel-pppd)
noauth		# (from /etc/ppp/peers/quectel-pppd)
remotename 3gppp		# (from /etc/ppp/peers/quectel-pppd)
/dev/ttyUSB3		# (from /etc/ppp/peers/quectel-pppd)
115200		# (from /etc/ppp/peers/quectel-pppd)
lock		# (from /etc/ppp/peers/quectel-pppd)
connect chat -s -v -E -f /etc/ppp/peers/quectel-chat-connect		# (from /etc/ppp/peers/quectel-pppd)
disconnect chat -s -v -f /etc/ppp/peers/quectel-chat-disconnect		# (from /etc/ppp/peers/quectel-pppd)
nocrtscts		# (from /etc/ppp/peers/quectel-pppd)
modem		# (from /etc/ppp/peers/quectel-pppd)
hide-password		# (from /etc/ppp/peers/quectel-pppd)
novj		# (from /etc/ppp/peers/quectel-pppd)
novjccomp		# (from /etc/ppp/peers/quectel-pppd)
ipcp-accept-local		# (from /etc/ppp/peers/quectel-pppd)
ipcp-accept-remote		# (from /etc/ppp/peers/quectel-pppd)
ipparam 3gppp		# (from /etc/ppp/peers/quectel-pppd)
noipdefault		# (from /etc/ppp/peers/quectel-pppd)
ipcp-max-failure 30		# (from /etc/ppp/peers/quectel-pppd)
defaultroute		# (from /etc/ppp/peers/quectel-pppd)
usepeerdns		# (from /etc/ppp/peers/quectel-pppd)
noccp		# (from /etc/ppp/peers/quectel-pppd)
abort on (BUSY)
abort on (NO CARRIER)
abort on (NO DIALTONE)
abort on (ERROR)
abort on (NO ANSWER)
timeout set to 30 seconds
send (AT^M)
expect (OK)
^M
OK
 -- got it

send (ATE0^M)
expect (OK)
^M
^M
OK
 -- got it

send (ATI;+CSUB;+CSQ;+CPIN?;+COPS?;+CGREG?;&D2^M)
expect (OK)
^M
^M
Quectel^M
EG915Q-NA^M
Revision: EG915QNALCR01A07M04^M
^M
SubEdition: V02^M
^M
+CSQ: 31,99^M
^M
+CPIN: READY^M
^M
+COPS: 0,,,7^M
^M
+CGREG: 0,1^M
^M
OK
 -- got it

send (AT+CGDCONT=1,"IPV4V6","jionet",,0,0^M)
expect (OK)
^M
^M
OK
 -- got it

send (ATD*99#^M)
expect (CONNECT)
^M
^M
CONNECT
 -- got it

Script chat -s -v -E -f /etc/ppp/peers/quectel-chat-connect finished (pid 26054), status = 0x0
Serial connection established.
using channel 8
Using interface ppp0
Connect: ppp0 <--> /dev/ttyUSB3
sent [LCP ConfReq id=0x1 <asyncmap 0x0> <magic 0x5400140b> <pcomp> <accomp>]
rcvd [LCP ConfReq id=0x1 <asyncmap 0x0> <auth chap MD5> <magic 0x88bc6955> <pcomp> <accomp>]
No auth is possible
sent [LCP ConfRej id=0x1 <auth chap MD5>]
rcvd [LCP ConfAck id=0x1 <asyncmap 0x0> <magic 0x5400140b> <pcomp> <accomp>]
rcvd [LCP ConfReq id=0x2 <asyncmap 0x0> <magic 0x88bc6955> <pcomp> <accomp>]
sent [LCP ConfAck id=0x2 <asyncmap 0x0> <magic 0x88bc6955> <pcomp> <accomp>]
sent [IPCP ConfReq id=0x1 <addr 0.0.0.0> <ms-dns1 0.0.0.0> <ms-dns2 0.0.0.0>]
rcvd [IPCP ConfReq id=0x1]
sent [IPCP ConfNak id=0x1 <addr 0.0.0.0>]
rcvd [IPCP ConfRej id=0x1 <addr 0.0.0.0> <ms-dns1 0.0.0.0> <ms-dns2 0.0.0.0>]
sent [IPCP ConfReq id=0x2 <addrs 0.0.0.0 0.0.0.0>]
rcvd [IPCP ConfReq id=0x2]
sent [IPCP ConfAck id=0x2]
rcvd [IPCP ConfRej id=0x2 <addrs 0.0.0.0 0.0.0.0>]
sent [IPCP ConfReq id=0x3]
rcvd [IPCP ConfAck id=0x3]
Could not determine local IP address
Connect time 0.1 minutes.
Sent 54 bytes, received 88 bytes.
sent [IPCP TermReq id=0x4 "Could not determine local IP address"]
rcvd [IPCP TermReq id=0x3 "Could not determine local IP address"]
sent [IPCP TermAck id=0x3]
rcvd [IPCP TermAck id=0x4]
sent [LCP TermReq id=0x2 "No network protocols running"]
rcvd [LCP TermAck id=0x2]
Connection terminated.
abort on (ERROR)
abort on (NO DIALTONE)

Sending break to the modem
send (+++^M)
send (+++^M)
send (+++^M)

Goodbay
Script chat -s -v -f /etc/ppp/peers/quectel-chat-disconnect finished (pid 26069), status = 0x0
Serial link disconnected.