Why not hear the interlocutor Asterisk GSM Dongle?

Is a virtual machine(Vbox), it is connected through usb modem Huawei E150. Inside calls go fine(you can hear each other), but if you call external numbers, the caller can't hear me, I hear him(out via dongle). What could be the reason?
June 3rd 19 at 19:08
2 answers
June 3rd 19 at 19:10
From Huawei e150 unilateral hearing when you install the standard module chan_dongle. You need to either find a to patch the module yourself, or use other modems (Huawei e1550, e171, e173). Or use Oktell SIP-GSM gateway for Windows, it supports the correct data modems.
Replaced the E1550 and it works. Thank you. - olaf_Ha commented on June 3rd 19 at 19:13
June 3rd 19 at 19:12
Need debajit. put sngrep and see what happens during the call.
There is nothing debajit there to patch necessary. A known issue with Huawei e150. - olaf_Ha commented on June 3rd 19 at 19:15

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