E303S one way audio if modem in 3G, if forced to 2G working both ways (SOLVED)

[ciberp]

Hi!

I am strugling with E303S to get it working. I can make calls in both directions. Problem is only when a call is made from any ip phone to asterisk through dongle, than audio is only one way (not getting audio from iphone, but I get audio from outside to ip phone). If I make a call from outside to dongle than audio is working in both directions. I searched around and found out that someone has added E303S 7bit support to fix that. I don't know if this will fix my problem but I would like to give it a try.

Error message:
[Feb 21 20:36:47] ERROR[1100] chan_dongle.c: [dongle0] timedout while waiting 'OK' in response to 'AT'

antirek/asterisk-chan-dongle#117

after modifying and recompiling the at_response.c (at_response_cgmm) ussd
works. I have added E303S to 7-bit encoding modem list. now every thing works
perfectly fine, voice (bothway), SMS, USSD.

Can you give some directions how to check or add/remove 7bit, since I cannot find modem list.

Connected to Asterisk 16.2.1~dfsg-1+deb10u2 currently running on rpi4-2 (pid = 11622)

rpi4-2*CLI> dongle show device settings dongle0
------------- Settings ------------
  Device                  : dongle0
  Audio                   : /dev/ttyUSB1
  Data                    : /dev/ttyUSB2
  IMEI                    :
  IMSI                    :
  Channel Language        : en
  Context                 : incoming
  Exten                   : +38664XXXXXX
  Group                   : 0
  RX gain                 : 0
  TX gain                 : 0
  U2Diag                  : -1
  Use CallingPres         : Yes
  Default CallingPres     : Presentation Allowed, Passed Screen
  Auto delete SMS         : Yes
  Disable SMS             : No
  Reset Dongle            : Yes
  Call Waiting            : auto
  DTMF                    : relax
  Minimal DTMF Gap        : 45
  Minimal DTMF Duration   : 80
  Minimal DTMF Interval   : 200
  Initial device state    : start

rpi4-2*CLI> dongle show device state dongle0
-------------- Status -------------
  Device                  : dongle0
  State                   : Free
  Audio                   : /dev/ttyUSB1
  Data                    : /dev/ttyUSB2
  Voice                   : Yes
  SMS                     : Yes
  Manufacturer            : huawei
  Model                   : E303S
  Firmware                : 21.157.31.00.850
  IMEI                    : 86173700677XXXX
  IMSI                    : 29364000028XXXX
  GSM Registration Status : Registered, roaming
  RSSI                    : 13, -87 dBm
  Mode                    : No Service
  Submode                 : No service
  Provider Name           : Mobitel d.d
  Location area code      : "000B"
  Cell ID                 : "4FC7"
  Subscriber Number       : Unknown
  SMS Service Center      : +38664100010
  Use UCS-2 encoding      : No
  Tasks in queue          : 0
  Commands in queue       : 0
  Call Waiting            : Disabled
  Current device state    : start
  Desired device state    : start
  When change state       : now
  Calls/Channels          : 0
    Active                : 0
    Held                  : 0
    Dialing               : 0
    Alerting              : 0
    Incoming              : 0
    Waiting               : 0
    Releasing             : 0
    Initializing          : 0

rpi4-2*CLI> dongle show  version

chan_dongle: Huawei 3G Dongle Channel Driver, Version 1.1, Revision 43gh=47cg
Project Home: https://github.com/bg111/asterisk-chan-dongle/
Bug Reporting: https://github.com/bg111/asterisk-chan-dongle/issues

rpi4-2*CLI> dongle cmd dongle0 ATI
[dongle0] 'ATI' AT command queued
 [dongle0] Got Response for user's command:'Manufacturer: huawei'
[Feb 24 06:50:19] NOTICE[7263]: at_response.c:1816 at_response: [dongle0] Got Response for user's command:'Manufacturer: huawei'
 [dongle0] Got Response for user's command:'OK'
[Feb 24 06:50:19] NOTICE[7263]: at_response.c:1816 at_response: [dongle0] Got Response for user's command:'OK'

rpi4-2*CLI> dongle cmd dongle0 AT+CSCS="GSM"
[dongle0] 'AT+CSCS=GSM' AT command queued
 [dongle0] Got Response for user's command:'ERROR'
[Feb 24 06:50:47] NOTICE[7263]: at_response.c:1816 at_response: [dongle0] Got Response for user's command:'ERROR'
[Feb 24 06:50:47] ERROR[7263]: at_response.c:287 log_cmd_response_error: [dongle0] Received 'ERROR' for unhandled command 'USER'S'

rpi4-2*CLI> dongle cmd dongle0 ATD031XXXXXX;
[dongle0] 'ATD031XXXXXX;' AT command queued
 [dongle0] Got Response for user's command:'OK'
[Feb 24 06:53:15] NOTICE[7263]: at_response.c:1816 at_response: [dongle0] Got Response for user's command:'OK'
[Feb 24 06:53:15] ERROR[7263]: at_response.c:621 at_response_orig: [dongle0] ^ORIG '^ORIG:1,0' for unknown ATD

Thank you for your time in advance.

Best regards,
Peter

[ciberp]

Hi!

I did some more testing and found out that audio is actually working in both direction but it stops after first call. Command dongle reset dongle0 solves the problem ...

Any hint how to troubleshoot that?

Thank you.

Regards,
Peter

[ciberp]

Tried with 7bit set, no difference, problem with one-way-audio on outgoing call exists. I noticed some timeouts if call is not picked up immediately.

rpi4-2*CLI>
  == Using SIP RTP CoS mark 5
       > 0xb410d090 -- Strict RTP learning after remote address set to: 172.22.0.97:29486
    -- Executing [XXXXXXXX@users:1] Dial("SIP/1-00000003", "Dongle/dongle0/XXXXXXXX") in new stack
    -- Called Dongle/dongle0/XXXXXXXX
    -- Dongle/dongle0-0100000003 is making progress passing it to SIP/1-00000003
       > 0xb410d090 -- Strict RTP switching to RTP target address 172.22.0.97:29486 as source
       > 0xb410d090 -- Strict RTP learning complete - Locking on source address 172.22.0.97:29486
[Feb 24 22:18:25] ERROR[18660]: chan_dongle.c:445 do_monitor_phone: [dongle0] timedout while waiting 'OK' in response to 'AT'
    -- [dongle0] Dongle has disconnected
  == Everyone is busy/congested at this time (1:0/0/1)
    -- Auto fallthrough, channel 'SIP/1-00000003' status is 'CHANUNAVAIL'
    -- [dongle0] Trying to connect on /dev/ttyUSB2...
    -- [dongle0] Dongle has connected, initializing...
    -- [dongle0] Dongle initialized and ready

rpi4-2*CLI> dongle show device state dongle0
-------------- Status -------------
  Device                  : dongle0
  State                   : Free
  Audio                   : /dev/ttyUSB1
  Data                    : /dev/ttyUSB2
  Voice                   : Yes
  SMS                     : Yes
  Manufacturer            : huawei
  Model                   : E303S
  Firmware                : 21.157.31.00.850
  IMEI                    : 86173700677XXXX
  IMSI                    : 29364000028XXXX
  GSM Registration Status : Registered, roaming
  RSSI                    : 15, -83 dBm
  Mode                    : No Service
  Submode                 : No service
  Provider Name           : Mobitel d.d
  Location area code      : "000B"
  Cell ID                 : "4FC7"
  Subscriber Number       : Unknown
  SMS Service Center      : 002B003300380036003
  Use UCS-2 encoding      : Yes
  USSD use 7 bit encoding : Yes
  USSD use UCS-2 decoding : No
  Tasks in queue          : 0
  Commands in queue       : 0
  Call Waiting            : Disabled
  Current device state    : start
  Desired device state    : start
  When change state       : now
  Calls/Channels          : 0
    Active                : 0
    Held                  : 0
    Dialing               : 0
    Alerting              : 0
    Incoming              : 0
    Waiting               : 0
    Releasing             : 0
    Initializing          : 0

[ciberp]

Hi!

I did some more testing and found out the problem. I got one way audio only if inserted SIM is in GSM Registration Status : Registered, roaming. Error message: [Feb 21 20:36:47] ERROR[1100] chan_dongle.c: [dongle0] timedout while waiting 'OK' in response to 'AT'
If SIM is in GSM Registration Status : Registered, home network then all voice calls are working both ways with audio and no error msg.

Regards,
Peter

[ciberp]

Today I change SIM card with another one and got one way audio again. Than I realised that with working SIM huawei led light was blinking green and with one-way-audio was blinking blue. I checked huawei e303 manual which says:
Green, blinking once every 3s: The USB Stick is registering with a 2G network
Blue, blinking once every 3s: The USB Stick is registering with a 3G/3G+ network.

Modem AT commands

Any : AT^SYSCFG=2,0,3FFFFFFF,2,4
2G only : AT^SYSCFG=13,1,3FFFFFFF,2,4
3G only : AT^SYSCFG=14,2,3FFFFFFF,2,4
2G preferred : AT^SYSCFG=2,1,3FFFFFFF,2,4
3G preferred : AT^SYSCFG=2,2,3FFFFFFF,2,4

So I run AT commands through asterisk dongle cmd to force modem to 2G:

rpi4-2*CLI> dongle cmd dongle0 AT^SYSCFG=13,1,3FFFFFFF,2,4
[dongle0] 'AT^SYSCFG=13,1,3FFFFFFF,2,4' Command queued for execute
[dongle0] Got Response for user's command:'OK'

And now one-way-audio si fixed and no error msg!
So it looks like that e303s has some issues with 3G network or something...