One way audio in SIP calls via TP Link MR6400
Hi there, I have a new TP Link MR6400 – Sip traffic does not work for my home VPN phone or via soft clients. SIP audio RTP is blocked inbound (people can hear me, I cannot hear them). I have tried to disable SPI, SIP ALG etc… all to no effect. I believe this is a FW bug – please advise if there is a new FW or fix for this.
This worked on this carrier with a Huawei B525 with the same SIM and SIP client so this is a router issue.
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Below is a beta firmware which you can install it and test whether it works.
http://support.tp-link.com/f/f04d6c6d36/?dl=1
If still the same, you can contact the retailer to change another one with newer hardware version, like V3 or V4.
May it help.
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Below is a beta firmware which you can install it and test whether it works.
http://support.tp-link.com/f/f04d6c6d36/?dl=1
If still the same, you can contact the retailer to change another one with newer hardware version, like V3 or V4.
May it help.
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@Kevin_Z Thank you so much, that appears to work straight away.
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Thanks for your reply, glad to hear that it works.
Now you can enjoy the internet and the VOIP service.
If need more help, please let us know.
Best regards
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