Other person cannot hear me unless I place call on hold and resume

Help & Support
1

I am encountering an issue and I’m not sure how to troubleshoot because I’m not sure where the exact issue is stemming from.

Sometimes while on a call, my audio will go on mute and the other person cannot hear me but I can hear them.

It seems that the only thing that resolves the issue is if I place the call on hold, and then resume it right away. Then the other person can hear me again.

Then after a few moments of talking it will happen again and the person can’t hear me and I have to keep pressing hold/resume.

Softphone:

Linphone Android Version 6.0.21

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DID Settings:

Routing

Main: SIP/IAX → SIP/######_MySubAcct

Failover: If Unreachable: Voicemail → MyVoiceMail

DID Point of Presence:

chicago3.voip.ms

Sub account settings:

NAT: Yes

Encrypted SIP traffic: Yes

Is this a Linphone issue? A voip.ms issue?

2

Hello @edisondotme,

It could be a Linphone issue, or a SRTP issue (usually configured at the same time as your encrypted SIP traffic).

I do not remember having a great experience with Linphone. You might want to try others too. I shared a bit of my experience in this regard here:

Check to make sure SRTP is configured properly, then if it still does not work, give a quick try to other soft phones. Like the one from voip.ms, or Zoiper. For my part, I paid for Groundwire and it is just working well, period.

Also, check if on your router you have disabled the “SIP ALG / SIP Passthrough” option. Very often, it causes problems with SRTP.

Kind regards!