yealink T21p incoming not working

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hershyheilpern

New Member
Jun 5, 2018
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i use a lot the yealink T21p and a lot of times they are under a NAT sometimes it dose work and sometimes not is there something i can do o make it work
 

ad5ou

Active Member
Jun 12, 2018
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Enable "rport", use keep alive, and set short registration times.
Make sure firewall does not have any type of "sip helper" or sip alg enabled.
 

DigitalDaz

Administrator
Staff member
Sep 29, 2016
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A said above, rport + regisration timer at 120 and also transport tcp
 
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