Enable SSAF (SIP Source Address Filter)
Description Selects whether to enable SSAF for the SIP servers (registrar server,
proxy server, and presence server).
Value Range
• Yes
• No
Default Value No
Configuration File Reference SIP_DETECT_SSAF_n (Page 249)
Enable c=0.0.0.0 Hold (RFC 2543)
Description Selects whether to enable the RFC 2543 Call Hold feature on this line.
Value Range
• Yes
• No
Note
• If you select [Yes], the "c=0.0.0.0" syntax will be set in SDP
when sending a re-INVITE message to hold the call. If you
select
[No], the "c=x.x.x.x" syntax will be set in SDP.
Default Value Yes
Configuration File Reference RFC2543_HOLD_ENABLE_n (Page 256)
Transport Protocol
Description Selects which transport layer protocol to use for sending SIP packets.
Value Range
• UDP
• TCP
• TLS
Default Value UDP
Configuration File Reference SIP_TRANSPORT_n (Page 259)
TLS Mode
Description Select the secure SIP protocol.
Value Range
• SIPS
• SIP-TLS
Default Value SIPS
Configuration File Reference SIP_TLS_MODE_n (Page 260)
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4.5.2 SIP Settings [Line 1]–[Line 2]