FreePBX - No Audio until Hold Music

@rmblakes wrote:

Hi All,

Hoping someone can help me with this one…

I cannot get the outbound or inbound audio to work until I put the hold music.

Here’s my current setup details:

Raspberry Pi, FreePBX 14.0.2.10
Sophos UTM with SIP Helper and NAT UDP 5060 > FreePBX Box.
1 x iPhone 7, Zoiper Free, logged in as Test
1 x Samsung Galaxy S9, Zoiper Free, logged in as User1

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Dial (Using 4G Cell network) Test > User1 =GOOD
Dial (Using 4G cell network) Test > Landline = No two way audio (cannot hear either party) until HOLD button pressed on Zoiper, then audio works.

Dial (Using internal wifi network with Freepbx on Subnet) Test > User1 = GOOD
Dial (Using internal wifi network with Freepbx on Subnet) Test > Landline = GOOD

Anything I should be trying next? Why would putting the call on hold allow the voice to work?

Thanks

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