[asterisk-users] No ringback heard

[Saint Michael]

I dial two destination like this

Dial(PJSIP/endpoint1/sip:${EXTEN}@${IPA}&PJSIP/endpoint1/sip:${EXTEN}@
${IPB})

But I need the audio from one of them to be heard by the caller.
None gets heard. I switch the order but nothing.
How I get the audio for  one in particular?
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