Yealink SIP-T4 Series Configuration Manual page 131

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##It configures the SIP server type for account X.0-Default,2-BroadSoft,4-
Cosmocom,6-UCAP
##The default value is 0.
account.3.sip_server_type = 2
account.3.unregister_on_reboot =
account.3.proxy_require =
account.3.register_mac =
account.3.register_line =
account.3.reg_fail_retry_interval =
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##It enables or disables the NAT traversal for account X.0-Disabled,1-
Enabled
##The default value is 0.
account.3.nat.nat_traversal =
##It configures the IP address or domain name of the STUN server for
account X.
##The default value is blank.
##It configures the port of the STUN server for account X.
##The default value is 3478.
##It configures the type of keep-alive packets sent by the phone to the
NAT static to keep the communication port open so that NAT can continue to
function for account X.
##0-Dsiabled,1-Default: the phone sends UDP packets to the server,2-
Option: the phone sends SIP OPTION packets to the server,3-Notify: the
phone sends SIP NOTIFY packets to the server.
##The default value is 1.
account.3.nat.udp_update_enable =
##It configures the keep-alive interval (in seconds) for account X.
##The default value is 30.Integer from 15 to 2147483647
account.3.nat.udp_update_time =
##It enables or disables NAT Rport feature for account X.0-Disabled,1-
Enabled
##The default value is 0.
account.3.nat.rport =
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##It configures the voice mail number for account X.
##The default value is blank.
voice_mail.number.3 = %BWVOICE-PORTAL-NUMBER-3%
##Except T19P/T21P Models
BROADSOFT PARTNER CONFIGURATION GUIDE – YEALINK T4X IP PHONE
2017 BROADSOFT INC.
©
NAT Settings
Account3 Advance Settings
20-BD5476-00
PAGE 131 OF 150