Patton electronic SmartNode 4110 Series Nodepf-voipname#fax transmis, Sion bypass g711alaw64k

SmartWare Software Configuration Guide 47 • VoIP profile configuration

Mode: Profile VoIP

	Step	Command			Purpose
1	node(pf-voip)[name]#fax transmis-	Adds fax bypass transmission with codec G.711
		sion bypass g711alaw64k	to the list of fax transmission modes.Alternative
			codecs available are:
			•		G.711uLaw
			•		G.726 32kbps
			•		G.726 24kbps.
2	node(pf-voip)[name]#fax dejitter-	Sets the size of the dejitter buffer during fax trans-
	optional	max-delaybuffer-size	missions. The operating mode of the dejitter buffer
			is automatically set to fax optimized static-data
			mode.
			Patton recommends that you keep the size for fax
			transmissions higher than that used for voice, since
			fax is less sensitive to delay than packet loss.
			The default value is 200ms which should be nomi-
			nal for almost any transmission network. In excep-
			tional cases it may be necessary to increase this
			value (maximum 400ms).
Procedure: Configure fax relay (T.38)
Mode: Profile VoIP
	Step	Command			Purpose
1		node(pf-voip)[name]# fax transmis-		Adds fax relay transmission with T.38 protocol
		sion relay t38-udp		over UDP to the list of fax transmission modes.
2		node(pf-voip)[name]#fax		Packet loss can be avoided by transmitting the fax
(optional)		redundancy ls low-speed-redundancy hs		data packets several times. This can be configured
		high-speed-redundancy		separately for low speed and the high speed traf-
				fic. The default for both parameters is 0 (no redun-
				dant transmission). Note that values greater than 0
				provide more reliable transmissions, but consume
				additional bandwidth.
3		node(pf-voip)[name]# fax dejitter-		For proper operation, a dejitter buffer is used on
(optional)		max-delaybuffer-size		the receiver. The dejitter period can be set to com-
				pensate for the jitter imposed by the network. The
				default value is 200ms which should be nominal
				for almost any transmission network. Only in
				exceptional cases it may be necessary to increase
				this value (maximum 400ms). The dejitter buffer,
				by default, applies the operation mode ‘static-
				data’, i.e. minimizes the packet loss.

VoIP profile configuration task list 586