[Linphone-users] Sip calls to landlines drop on connection

[K.J. Petrie]

I am trying to configure Linphone to make calls to landlines via my
provider's (FreeVoipDeal) sip interface. I can ring the landline but
when I answer it the contact starts flashing red and the call
disconnects. Starting linphone --verbose produces the following
output:

[19:01:29:127][0x16ef480][Info]"Add call:" CallModel(0x43ecd80)
[19:01:29:129][0x1b2fc40][Debug]"Image
`:/assets/images/hangup_normal.svg` requested with size: (12, 12)."
[19:01:29:130][0x1b2fc40][Debug]"Image
`:/assets/images/hangup_normal.svg` loaded in 0 milliseconds."
[19:01:29:130][0x1b2fc40][Debug]"Image
`:/assets/images/micro_on_normal.svg` requested with size: (40, 40)."
[19:01:29:130][0x1b2fc40][Debug]"Image
`:/assets/images/micro_on_normal.svg` loaded in 0 milliseconds."
[19:01:29:144][0x16ef480][Warning]file:///usr/lib64/qt5/qml/QtQuick/Dialogs/DefaultFileDialog.qml:102:33:
QML Settings: Failed to initialize QSettings instance. Status code is:
1
[19:01:29:144][0x16ef480][Warning]file:///usr/lib64/qt5/qml/QtQuick/Dialogs/DefaultFileDialog.qml:102:33:
QML Settings: The following application identifiers have not been set:
QVector("organizationName", "organizationDomain")
[19:01:29:164][0x1b2fc40][Debug]"Image
`:/assets/images/hangup_hovered.svg` requested with size: (40, 40)."
[19:01:29:165][0x1b2fc40][Debug]"Image
`:/assets/images/hangup_hovered.svg` loaded in 0 milliseconds."
[19:01:29:166][0x1b2fc40][Debug]"Image
`:/assets/images/hangup_normal.svg` requested with size: (35, 35)."
[19:01:29:167][0x1b2fc40][Debug]"Image
`:/assets/images/hangup_normal.svg` loaded in 0 milliseconds."
[19:01:29:167][0x1b2fc40][Debug]"Image
`:/assets/images/call_sign_outgoing.svg` requested with size: (40,
40)." [19:01:29:168][0x1b2fc40][Debug]"Image
`:/assets/images/call_sign_outgoing.svg` loaded in 0 milliseconds."
[19:01:35:396][0x1b2fc40][Debug]"Image
`:/assets/images/chat_normal.svg` requested with size: (12, 12)."
[19:01:35:397][0x1b2fc40][Debug]"Image
`:/assets/images/chat_normal.svg` loaded in 0 milliseconds."
[19:01:35:397][0x1b2fc40][Debug]"Image
`:/assets/images/options_normal.svg` requested with size: (40, 40)."
[19:01:35:399][0x1b2fc40][Debug]"Image
`:/assets/images/options_normal.svg` loaded in 1 milliseconds."
[19:01:35:399][0x1b2fc40][Debug]"Image
`:/assets/images/speaker_on_normal.svg` requested with size: (40, 40)."
[19:01:35:400][0x1b2fc40][Debug]"Image
`:/assets/images/speaker_on_normal.svg` loaded in 0 milliseconds."
[19:01:35:400][0x1b2fc40][Debug]"Image
`:/assets/images/camera_off_normal.svg` requested with size: (40, 40)."
[19:01:35:400][0x1b2fc40][Debug]"Image
`:/assets/images/camera_off_normal.svg` loaded in 0 milliseconds."
[19:01:35:400][0x1b2fc40][Debug]"Image `:/assets/images/record_off.svg`
requested with size: (12, 12)." [19:01:35:401][0x1b2fc40][Debug]"Image
`:/assets/images/record_off.svg` loaded in 0 milliseconds."
[19:01:35:401][0x1b2fc40][Debug]"Image
`:/assets/images/screenshot_normal.svg` requested with size: (40, 40)."
[19:01:35:402][0x1b2fc40][Debug]"Image
`:/assets/images/screenshot_normal.svg` loaded in 0 milliseconds."
[19:01:35:402][0x1b2fc40][Debug]"Image
`:/assets/images/tel_keypad_normal.svg` requested with size: (12, 12)."
[19:01:35:402][0x1b2fc40][Debug]"Image
`:/assets/images/tel_keypad_normal.svg` loaded in 0 milliseconds."
[19:01:35:403][0x1b2fc40][Debug]"Image
`:/assets/images/tel_keypad_normal.svg` requested with size: (16, 16)."
[19:01:35:403][0x1b2fc40][Debug]"Image
`:/assets/images/tel_keypad_normal.svg` loaded in 0 milliseconds."
[19:01:35:403][0x1b2fc40][Debug]"Image
`:/assets/images/call_quality_0.svg` requested with size: (16, 16)."
[19:01:35:404][0x1b2fc40][Debug]"Image
`:/assets/images/call_quality_0.svg` loaded in 0 milliseconds."
[19:01:35:404][0x1b2fc40][Debug]"Image
`:/assets/images/call_chat_unsecure_normal.svg` requested with size:
(16, 16)." [19:01:35:404][0x1b2fc40][Debug]"Image
`:/assets/images/call_chat_unsecure_normal.svg` loaded in 0
milliseconds." [19:01:35:404][0x1b2fc40][Debug]"Image
`:/assets/images/record_off.svg` requested with size: (40, 40)."
[19:01:35:405][0x1b2fc40][Debug]"Image `:/assets/images/record_off.svg`
loaded in 0 milliseconds." [19:01:35:405][0x1b2fc40][Debug]"Image
`:/assets/images/fullscreen_normal.svg` requested with size: (40, 40)."
[19:01:35:405][0x1b2fc40][Debug]"Image
`:/assets/images/fullscreen_normal.svg` loaded in 0 milliseconds."
[19:01:35:405][0x1b2fc40][Debug]"Image
`:/assets/images/pause_on_normal.svg` requested with size: (40, 40)."
[19:01:35:406][0x1b2fc40][Debug]"Image
`:/assets/images/pause_on_normal.svg` loaded in 0 milliseconds."
[19:01:35:406][0x1b2fc40][Debug]"Image
`:/assets/images/chat_normal.svg` requested with size: (40, 40)."
[19:01:35:406][0x1b2fc40][Debug]"Image
`:/assets/images/chat_normal.svg` loaded in 0 milliseconds."
[19:01:35:407][0x1b2fc40][Debug]"Image
`:/assets/images/burger_menu_normal.svg` requested with size: (17,
17)." [19:01:35:407][0x1b2fc40][Debug]"Image
`:/assets/images/burger_menu_normal.svg` loaded in 0 milliseconds."
[19:01:35:407][0x1b2fc40][Debug]"Image
`:/assets/images/call_sign_connected.svg` requested with size: (40,
40)." [19:01:35:407][0x1b2fc40][Debug]"Image
`:/assets/images/call_sign_connected.svg` loaded in 0 milliseconds."
[19:01:38:694][0x16ef480][Info]"Removing call:" CallModel(0x43ecd80)

This all appears to relate to the GUI and is therefore useless for
debugging the connection on the back end. How can I enable debugging
that will actually tell me where the connection goes wrong?