[asterisk-users] Cannot configure PJSIP TLS

[Nick Awesome]

Hey guys,tried to make tls work with pjsip on asterisk 13.2.0

have compiled pjsip with ssl,

added transport

[tls]
type=transport
cert_file=/pbx/keys/server.crt
ca_list_file=/pbx/keys/ca.key
priv_key_file=/pbx/keys/server.key
protocol=tls
bind=192.168.1.4:5061
local_net=192.168.1.0/24
external_media_address=77.77.77.77
external_signaling_address=77.77.77.77 

have configured Grandstream GXP1400 to use tis and srtp, server.crt and server.key uploaded to phone

ubuntu*CLI> pjsip show transports
Transport:  tls                       tls      0      0  192.168.1.4:5061

so transport exist, have set endpoint transport to tls,

but for some reason phone getting timeout 408. tried from local network and behind the nat, nothing. 
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