Value Range
1–7 (´ 10 ms)
Note
• This setting is subject to the following conditions:
– This value must be greater than or equal to [Minimum
Delay]
– This value must be less than [Maximum Delay]
Default Value
2 (´ 10 ms)
Configuration File Reference NOM_DELAY_n (Page 203)
4.5.4.4 DTMF
DTMF Type
Description Selects the method for transmitting DTMF (Dual Tone Multi-Frequency)
tones.
Value Range
• Outband
• Inband
Note
• If you select [Outband], DTMF tones will be sent through SDP
(Session Description Protocol), compliant with RFC 2833. If you
select [Inband], DTMF tones will be encoded in the RTP
stream.
Default Value Outband
Configuration File Reference OUTBANDDTMF_n (Page 206)
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 207)
106 Administrator Guide Document Version 2011-06
4.5.4 VoIP Settings [Line 1]–[Line 4]
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