Fanvil X3, X4 firmware

[manfer]

There are many problems with firmware for these phones to work with 3CX.

https://www.3cx.com/community/threads/fanvil-x4-blf-issues.63610/#post-272602
I have solved this problem with BLFs by upgrading to last firmware version 2.10.0.6586 and applying a patch to disable "Enable Reg Exp" (an option that can't be disabled on GUI)

Once I thought it was the only problem and the client would be finally with a working system I found this was not the only problem. It shows one way audio on attended transfers, at least from X5 phones and when using SBC.
https://www.3cx.com/community/threads/one-way-audio-on-attended-transfer-after-update-to-v16.63887/

As I have enough already, I don't want to dig anymore on what is wrong on this one way audio issue. If it is just on SBC connected phones, just the attended transfer from X5 to X4, ..., whatever. I'm just going to downgrade my clients phones to 2.3.2 as @Andriy suggests. I have just tested and firmware 2.3.2 doen't show the BLF problem nor one way audio on attended transfers.

I hope fanvil could fix this phone new firmware to work properly with 3CX local, stun and SBC. Firmware 2.10.0.6586 still has bugs. Several bugs.

 

[JohnS_3CX]

@kieferschild only what it described specifically. So no, external calls are not affected, and please enable PBX delivers audio to help the internal calls regarding the hold/unhold case I described above

 

[manfer]

Is this just a Fanvil issue?

My customer has X4s and ive just put them on to the newly released FW to solve the BLF and one way audio issue behind an SBC. Are you telling me they're going to have one way audio issues again caused by the SBC? Does this apply to external calls att. transferred?

Almost sure this new bug happens only on internal calls. When an extension attends a call from another extension on the PBX and puts the call on hold there is no audio when the call is resumed.

It can be solved by enabling PBX delivers audio on extension configuration till a fix on a new firmware. That feature is available on Options tab on extension configuration.