Linksys SPA941 Administration Manual page 73

Use Pref Codec Only
Silence Supp Enable
1
G729a Enable
1
G723 Enable
1
G726-16 Enable
1
G726-24 Enable
1
G726-32 Enable
1
G726-40 Enable
DTMF Tx Method
DTMF Process AVT
Release Unused Codec
Notes:
1. A codec resource is considered as allocated if it has been included in the SDP codec list of an active
call, even though it eventually may not be the one chosen for the connection. So, if the G.729a codec is
enabled and included in the codec list, that resource is tied up until the end of the call whether or not the
call actually uses G.729a. If the G729a resource is already allocated and since only one G.729a resource
is allowed per SPA, no other low-bit-rate codec may be allocated for subsequent calls; the only choices
are G711a and G711u. On the other hand, two G.723.1/G.726 resources are available per SPA.
Therefore it is important to disable the use of G.729a in order to guarantee the support of 2 simultaneous
G.723/G.726 codec.
Dial Plan
Parameter Name
DIAL PLAN
ENABLE IP DIALING
See the previous section for explanation of Dial Plan Script syntax.
© 2003 - 2005 Linksys, a Division of Cisco Systems
24, G726-32, G726-40, G729a, G723
Only use the preferred codec for all calls. The call will fail if
the far end does not support this codec.
Enable silence suppression so that silent audio frames are
not transmitted
Enable the use of G729a codec at 8 kbps.
Enable the use of G723 codec at 6.3 kbps
Enable the use of G726 codec at 16 kbps
Enable the use of G726 codec at 24 kbps
Enable the use of G726 codec at 32 kbps
Enable the use of G726 codec at 40 kbps
Method to transmit DTMF signals to the far end: Inband =
Send DTMF using the audio path; INFO = Use the SIP
INFO method, AVT = Send DTMF as AVT events; Auto =
Use Inband or AVT or INFO based on outcome of codec
negotiation
If set to yes, SPA will include AVT payload type in its SDP
and will process AVT (DTMF) packets sent by the peer.
Else, it will not include AVT payload type in the SDP.
If set to yes, SPA will relinquish all the low bit rate codecs
included in the original SDP that are not supported by the
called party; hence other concurrent calls can reuse these
low bit rate codecs (such as g729a). Otherwise, the SPA
will not relinquish these resources until the end of the call
even if the called party did not indicate support for these
codecs
Description
Per-line dial plan script
Enable IP Dialing
Bool
Bool
Bool
Bool
Bool
Bool
Bool
Bool
{InBand,
AVT,
INFO
Auto}
Bool
Bool
Type
DialPlanScript
Bool
Proprietary (See Copyright Notice on Page 2)
DRAFT
No
No
Yes
Yes
Yes
Yes
Yes
Yes
Auto
Yes
Yes
Default
See below
no
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