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<p>I am looking at the pjsip.conf file shipped with asterisk, and trying to understand it. For example, there are 3 transport-X sections as noted below. Does this mean I could uncomment all 3? Must I uncomment 1? Is the -X portion of [transport-X] arbitrary?
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<div>; Basic UDP transport</div>
<div>;</div>
<div>;[transport-udp]</div>
<div>;type=transport<br>
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<div>;protocol=udp ;udp,tcp,tls,ws,wss</div>
<div>;bind=0.0.0.0</div>
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<div>; UDP transport behind NAT</div>
<div>;</div>
<div>;[transport-udp-nat]</div>
<div>;type=transport</div>
<div>;protocol=udp</div>
<div>;bind=0.0.0.0</div>
<div>;localnet=192.0.2.0/24</div>
<div>;external_media_address=203.0.113.1</div>
<div>;external_signaling_address=203.0.113.1</div>
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<div>; Basic IPv6 UDP transport</div>
<div>;</div>
<div>;[transport-udp-ipv6]</div>
<div>;type=transport</div>
<div>;protocol=udp</div>
<div>;bind=::</div>
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