Dynamic Payload Types And Sdp Codec Names - Cisco Linksys RT31P2 Administration Manual

FAX CED Detect Enable
FAX CNG Detect
Enable
FAX Passthru Codec
FAX Codec Symmetric
FAX Passthru Method
FAX Process NSE
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 PHONE ADAPTER, 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 PHONE ADAPTER. 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.
4.6.3.

Dynamic Payload Types and SDP Codec Names

Note: You should only need to change the payload type mappings if you are interworking with a non-
standard implementation.
Parameter Name
NSE Dynamic Payload
AVT Dynamic Payload
G726r16 Dynamic Payload
G726r24 Dynamic Payload
G726r40 Dynamic Payload
G729b Dynamic Payload
Notes:
1. Valid range is 96 – 127
2. The configured dynamic payloads are used for outbound calls only where the PHONE ADAPTER
presents the SDP offer. For inbound calls with a SDP offer, PHONE ADAPTER will follow the caller's
dynamic payload type assignments
Parameter Name
NSE Codec Name
AVT Codec Name
G711a Codec Name
G711u Codec Name
G726r16 Codec Name
G726r24 Codec Name
G726r32 Codec Name
© 2004 Linksys Proprietary (See Copyright Notice on Page 2)
Enable detection of FAX tone.
Codec to use for fax passthru
Force unit to use symmetric codec during FAX
passthru
Choices: None / NSE / ReINVITE
Description
1,2
NSE dynamic payload type
1,2
AVT dynamic payload type
1,2
G726-16 dynamic payload type
1,2
G726-24 dynamic payload type
1,2
G726-40 dynamic payload type
1,2
G729b dynamic payload type
Description
NSE Codec name used in SDP
AVT Codec name used in SDP
G711a Codec name used in SDP
G711u Codec name used in SDP
G726-16 Codec name used in SDP
G726-24 Codec name used in SDP
G726-32 Codec name used in SDP
Bool Yes
Bool Yes
{G711u, G711u
G711a}
Bool Yes
Choice NSE
Bool Yes
Bool Yes
Type Default
Uns8 100
Uns8 101
Uns8 98
Uns8 97
Uns8 96
Uns8 99
Type Default
Str31 NSE
Str31 telephone-event
Str31 PCMA
Str31 PCMU
Str31 G726-16
Str31 G726-24
Str31 G726-32
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