# Internal ipv6 Sip Profile - Advanced \> SIP Profiles \> Internal IPV6 SIP Profile ![FusionPBX Internal SIP Profile](../_static/images/fusionpbx_internal_ipv6_sip_profile.jpg) - **Hostname-** Should be left blank and is for advanced use. |Name|Value|Enabled|Description| |---|---|---|---| |accept-blind-auth|true|False|| |accept-blind-reg|true|False|| |alias|sip:10.0.1.251:5555|False|| |apply-inbound-acl|domains|True|| |apply-register-acl|domains|False|| |auth-all-packets|false|True|| |auth-calls|$${internal_auth_calls}|True|| |bind-params|transport=udp|False|| |bitpacking|aal2|False|| |context|public|True|| |debug|0|True|| |dialplan|XML|True|| |disable-naptr|false|False|| |disable-register|true|False|| |disable-rtp-auto-adjust|true|False|| |disable-srv|false|False|| |disable-srv503|true|False|| |disable-transcoding|true|False|| |disable-transfer|true|False|| |dtmf-duration|2000|True|| |dtmf-type|rfc2833|True|| |enable-100rel|true|False|| |enable-3pcc|true|False|| |enable-compact-headers|true|False|| |enable-timer|false|False|| |extended-info-parsing|true|False|| |ext-rtp-ip|$${external_rtp_ip}|True|| |ext-sip-ip|$${external_rtp_ip}|True|| |force-register-db-domain|$${domain}|False|| |force-register-domain|$${domain}|False|| |forward-unsolicited-mwi-notify false| |True|| |hold-music|$${hold_music}|True|| |inbound-bypass-media|true|False|| |inbound-codec-negotiation|generous|True|| |inbound-codec-prefs|$${global_codec_prefs}|True|| |inbound-late-negotiation|true|False|| |inbound-proxy-media|true|False|| |inbound-reg-force-matching-username true| |True|| |manage-presence|true|True|| |max-proceeding|1000|False|| |multiple-registrations|contact|False|Enables registrations on multiple endpoints| |NDLB-broken-auth-hash|true|False|| |NDLB-force-rport|safe|True|Enables rport| |NDLB-received-in-nat-reg-contact true| |False|| |nonce-ttl|60|True|| |odbc-dsn|$${dsn}|False|| |outbound-codec-prefs|$${global_codec_prefs}|True|| |pass-callee-id|false|False|| |pass-rfc2833|true|False|| |presence-hosts|domain,{local_ip_v6} False| || |presence-privacy|$${presence_privacy}|True|| |presence-probe-on-register|true|True|| |presence-proto-lookup|true|False|| |record-path|$${recordings_dir}|True|| | record-template | \${domain_name}/
archive/
\${strftime(%Y)}/
\${strftime(%b)}/
\${strftime(%d)}/
\${uuid}.${record_ext} |True| || |registration-thread-frequency 30| |False|| |renegotiate-codec-on-hold|true|False|| |rfc2833-pt|101|True|| |rtp-hold-timeout-sec|1800|True|| |rtp-ip|$${local_ip_v6}|True|| |rtp-rewrite-timestamps|true|False|| |rtp-timeout-sec|300|True|| |rtp-timer-name|soft|True|| |session-timeout|1800|False|| |sip-ip|$${local_ip_v6}|True|| |sip-port|$${internal_sip_port}|True|| |sip-trace|no|True|| |suppress-cng|true|False|| |tls|$${internal_ssl_enable}|True|| |tls-bind-params|transport=tls|True|| |tls-cert-dir|$${internal_ssl_dir}|True|| |tls-only|false|True|| |tls-passphrase||True|| |tls-sip-port|$${internal_tls_port}|True|| |tls-verify-date|true|True|| |tls-verify-depth|2|True|| |tls-verify-in-subjects||True|| |tls-verify-policy|all\|subjects_all|False|| |tls-version|$${sip_tls_version}|True|| |unregister-on-options-fail|true|False|| |user-agent-string|FreeSWITCH|True|| |vad|out|False||