Value Range
• Yes
• No
Note
• If you select [Yes], DTMF tones will be sent in the SIP INFO
message. If you select [No], the method selected in [DTMF
Type] will be used.
Default Value No
Configuration File Reference DTMF_RELAY_n (Page 240)
4.5.4.5 Call Hold
Supports RFC 2543 (c=0.0.0.0)
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 241)
4.5.4.6 CODEC Preferences
G722 (Enable)
Description Selects whether to enable the G.722 codec for voice data transmission.
Value Range
• Yes
• No
Default Value Yes
Configuration File Reference CODEC_ENABLEx_n (Page 234)
G722 (Priority)
Description Specifies the numerical order usage priority for the G.722 codec.
Value Range 1–255
Default Value 1
Configuration File Reference CODEC_PRIORITYx_n (Page 234)
120 Administrator Guide Document Version 2013-03
4.5.4 VoIP Settings [Line 1]–[Line x]