asterisk + usb E1550

[Cramac]

Всем привет. Есть астрериск и модем.

Все настроено и работает, GSM через dongle

Но есть проблема, периодически при звонках длительностью 1м40с и выше, связь обрывается. Как можно решить данную проблему?

 

> dongle show devices
ID           Group State      RSSI Mode Submode Provider Name  Model      Firmware          IMEI             IMSI             Number
dongle0      0     Free       15   3    3       Beeline        E1550      11.608.12.00.143  3519......4361  250......829  Unknown

 

конфиг донгла

# cat dongle.conf
[general]

interval=15                     ; Number of seconds between trying to connect to devices

[defaults]
context=mobile                  ; context for incoming calls
group=0                         ; calling group
rxgain=0                        ; increase the incoming volume; may be negative
txgain=0                        ; increase the outgoint volume; may be negative
autodeletesms=yes               ; auto delete incoming sms
resetdongle=yes                 ; reset dongle during initialization with ATZ command
u2diag=-1                       ; set ^U2DIAG parameter on device (0 = disable everything except modem function) ; -1 not use ^U2DIAG command
usecallingpres=yes              ; use the caller ID presentation or not
callingpres=allowed_passed_screen ; set caller ID presentation          by default use default network settings
mindtmfgap=0
mindtmfduration=0
mindtmfinterval=100

exten=9629....79
dtmf=relax

[dongle0]
rxgain=5
txgain=-2
audio=/dev/ttyUSB1              ; tty port for audio connection;        no default value
data=/dev/ttyUSB2               ; tty port for AT commands;             no default value
imei=3519......4361
imsi=2500......02452