ZyXEL Communications OLT2406, User Manual

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Chapter 31 ONT VoIP
OLT2406 User’s Guide
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dtmf Select this to enable the handling of DTMF via RTP DTMF events as defined in RFC 4733. Clear it to
disable the handling of DTMF via RTP DTMF events as defined in RFC 4733.
cas Enable or disable handling of DTMF via RTP CAS (Channel Associated Signaling) events as defined
in RFC 4733.
jitter target Set the target value (from 0 to 5000) of the jitter buffer in milliseconds.
max jitter
buffer Set the maximum depth (from 0 to 500) of the jitter buffer in milliseconds.
pstn
protocol Set which variant (from 0 to 999) of POTS signaling to use on the associated UNIs.
announce
type Set the treatment for when a subscriber goes off-hook.
• silence : Silence
• reo-ton : Reorder tone
• fas-bus : Fast busy tone
• voi-ann : Voice announcement
echo cancel Enable or disable echo cancellation.
fax mode Set how to handle faxes.
Use passthru to transmit faxes as voice (in-band).
Use T38 to transmit faxes as separate packets (out-of-band) according to ITU-T T.38.
1st-4th
codec Specify the audio codecs to tell the remote ONT. The remote ONT must use the same codec as the
peer. Here are the options, encoding names, and clock rates (in Hz). See RFC 3551 for more details.
PCMU : PCMU, 8000
GSM : GSM, 8000
G723 : G.723, 8000
DVI4-8000 : DVI4, 8000
DVI4-16000 : DVI4, 16000
LPC : LPC, 8000
PCMA : PCMA, 8000
G722 : G.722, 8000
L16-2 : L16, 2 channels, 44100
L16-1 : L16, 1 channels, 44100
QCELP : QCELP, 8000
CN : CN, 8000
MPA : MPA, 90000
G728 : G.728, 8000
DVI4-11025 : DVI4, 11025
DVI4-22050 : DVI4, 22050
G729 : G.729, 8000
1st-4th
packet
period Specify the packet period selection interval (in milliseconds). This value is useful when the media
gateway controller does not provide the preferred compression algorithm and packet period
parameter to the ONT. The range depends on the type of codec selected.
1st-4th
silence Turn the use of silence suppression with the 1st-4th codecs on or off.
Table 113 Advanced Application > ONT VoIP > VoIP Common Profile (continued)
LABEL DESCRIPTION