[admin@router root]$ nvram show | grep modem | sort
size: 14054 bytes (18714 left)
wan0_modem_apn=internet.mts.ru
wan0_modem_autodetect=0
wan0_modem_demand=0
wan0_modem_dialno=*99#
wan0_modem_dialup_init=
wan0_modem_gateway=
wan0_modem_idle=60
wan0_modem_ipaddr=
wan0_modem_maxfail=0
wan0_modem_mru=1492
wan0_modem_mtu=1492
wan0_modem_options=
wan0_modem_passwd=mts
wan0_modem_pdata=0
wan0_modem_pid=0x0154
wan0_modem_port_ui=/dev/ttyUSB0
wan0_modem_portspeed=921600
wan0_modem_pui=0
wan0_modem_type=W
wan0_modem_usbloc=1.1
wan0_modem_username=mts
wan0_modem_vid=0x0421
wan0_modem_zerocd_mode=Auto
wan0_proto=usbmodem
wan_modem_apn=internet.mts.ru
wan_modem_autodetect=0
wan_modem_demand=0
wan_modem_dialno=*99#
wan_modem_dialup_init=
wan_modem_idle=60
wan_modem_init_script=
wan_modem_maxfail=0
wan_modem_mru=1492
wan_modem_mtu=1492
wan_modem_onfailure=
wan_modem_options=
wan_modem_passwd=mts
wan_modem_pdata=0
wan_modem_pid=0x0154
wan_modem_portspeed=921600
wan_modem_pui=0
wan_modem_type=W
wan_modem_usbloc=1.1
wan_modem_username=mts
wan_modem_vid=0x0421
wan_modem_zerocd_mode=Auto
wan_proto=usbmodem