Patton electronic SmartNode 4110 Series Configuring RTP payload type for transparent-clearmode

SmartWare Software Configuration Guide 47 • VoIP profile configuration

Configuring RTP payload type for transparent-clearmode

The following command configures the RTP payload type used for the transparent-clearmode codec.

Mode: configure/profile voip

Step	Command	Purpose
1	[name](pf-voip)[profile]#[no] crtp payload-	Specifies the rtp payload type used for
	type transparent-clearmode <payload-	transparent clearmode. Value must be
	type>	between 97 and 127. Default value is
		97.

Configuring RTP payload types for the g726-32k and g726-32k-cisco coders The following command specifies the RTP payload types for the g726-32k and the g726-32k-cisco coders to be used. It allows changing the payload types to a value in the range of 96 to 127 whereas the default value is 2 for both. Once a payload type has been changed, the ‘no’ form of the command must be used to go back to the default value.

Mode: profile voip

Step	Command	Purpose
1	[name](pv-voip)[name]#[no] rtp	Defines the RTP payload types for the g726-32k
	payload-type [g726-32k g726-	and the g726-32k-cisco coders.
	32k-cisco] <value 96..127>	Default: 2

Configuring RTP payload type for Cisco NSE

Configure the RTP payload-type when transmitting the NSE events. This payload-type is negotiated during call-setup when using SIP.

Named Service Events (NSE) are the Cisco-proprietary version of Named Telephony Events (NTEs). NTEs are defined in RFC 2833. Various telephony signaling events use tones, for example, DTMF. NSEs and NTEs communicate these tones (for representing signaling events), not by the presence of tones, but by sending a binary code representing the tone that is recreated at the destination. Cisco’s proprietary NSEs use different values to represent tones and events than the NTEs use.

NSEs are normally sent with RTP payload type 100. The RTP packets have the same source and destination IP addresses and UDP ports as the other packets in the media stream, but differ in the RTP payload types so they can be distinguished from the stream’s audio packets.

Mode: Profile VoIP

Step	Command	Purpose
1	node(pf-voip)[ name]#rtp payload-type nse	Specifies the RTP payload-type for Named Sig-
	payload-type	naling Events (NSE).
		Default: 100

Configuring Cisco NSE for Fax

This command specifies the method to be used for signaling the remote device the RTP Stream has switched to a voice-band Modem transmission. This feature is only available on the SIP protocol. If the command option

VoIP profile configuration task list 580