TAG_IF(sofia_test_pflag(profile, PFLAG_TLS), NUTAG_CERTIFICATE_DIR(profile->tls_cert_dir)),
TAG_IF(sofia_test_pflag(profile, PFLAG_TLS), TPTAG_TLS_VERIFY_POLICY(0)),
TAG_IF(sofia_test_pflag(profile, PFLAG_TLS), TPTAG_TLS_VERSION(profile->tls_version)),
+ TAG_IF(sofia_test_pflag(profile, PFLAG_TLS), TPTAG_KEEPALIVE(20000)),
TAG_IF(!strchr(profile->sipip, ':'), NTATAG_UDP_MTU(65535)),
TAG_IF(sofia_test_pflag(profile, PFLAG_DISABLE_SRV), NTATAG_USE_SRV(0)),
TAG_IF(sofia_test_pflag(profile, PFLAG_DISABLE_NAPTR), NTATAG_USE_NAPTR(0)),