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© 2003 Sipura Technology, Inc Proprietary (See Copyright Notice on Page 2)
22
NSE Dynamic Payload
1,2
NSE dynamic payload type 100
AVT Dynamic Payload
1,2
AVT dynamic payload type 101
G726r16 Dynamic Payload
1,2
G726-16 dynamic payload type 98
G726r24 Dynamic Payload
1,2
G726-24 dynamic payload type 97
G726r40 Dynamic Payload
1,2
G726-40 dynamic payload type 96
G729b Dynamic Payload
1,2
G729b dynamic payload type 99
Notes:
1. Valid range is 96 – 127
2. The configured dynamic payloads are used for outbound calls only where the SPA-2000 presents
the SDP offer. For inbound calls with a SDP offer, SPA-2000 will follow the caller’s dynamic payload
type assignments
3.4.4.2. SDP Audio Codec Names
Parameter Name Description Default
NSE Codec Name NSE Codec name used in SDP NSE
AVT Codec Name AVT Codec name used in SDP telephone-event
G711a Codec Name G711a Codec name used in SDP PCMA
G711u Codec Name G711u Codec name used in SDP PCMU
G726r16 Codec Name G726-16 Codec name used in SDP G726-16
G726r24 Codec Name G726-24 Codec name used in SDP G726-24
G726r32 Codec Name G726-32 Codec name used in SDP G726-32
G726r40 Codec Name G726-40 Codec name used in SDP G726-40
G729a Codec Name G729a Codec name used in SDP G729a
G729b Codec Name G729b Codec name used in SDP G729ab
Notes:
1. SPA-2000 uses the configured codec names in its outbound SDP
2. SPA-2000 ignores the codec names in incoming SDP for standard payload types (0 – 95).
3. For dynamic payload types, SPA-2000 identifies the codec by the configured codec names.
Comparison is case-insensitive.
3.4.4.3. NAT Support
Parameter Name Description Default
Handle_VIA_received If set to “yes”, the SPA will process the “received” parameter
in the VIA header inserted by the server in a response to any
one of its request. Else the parameter is ignored.
No
Handle_VIA_rport If set to “yes”, the SPA will process the “rport” parameter in
the VIA header inserted by the server in a response to any
one of its request. Else the parameter is ignored.
No
Insert VIA received Insert received parameter in VIA header in SIP responses if
received from IP and VIA sent-by IP differ
No
Insert VIA rport Insert rport parameter in VIA header in SIP responses if
received-from port and VIA sent-by port differ
No
Substitute VIA addr Use nat-mapped IP:port values in VIA header No
Send Resp To Src Port Send response to the request source port instead of the VIA
sent-by port
No
STUN Server STUN server to contact for NAT mapping discovery
STUN Enable Enable the use of STUN to discover NAT mapping No