Aastra Telecom 41-001343-02 manual RTP, Codec, Dtmf Global Settings

Operational, Basic, and Advanced Parameters

RTP, Codec, DTMF Global Settings

Global Settings

Parameter –	Configuration Files
sip rtp port	aastra.cfg, <model>.cfg, <mac>.cfg
Description	Indicates the port through which the RTP packets are sent. This value must specify the
	beginning of the RTP port range on the gateway or router.
	The RTP port is used for sending DTMF tones and for the audio stream. Your network
	administrator may close some ports for security reasons. You may want to use this
	parameter to send RTP data using a different port.

	Note:
	The phones support decoding and playing out DTMF tones sent in SIP INFO requests.
	The following DTMF tones are supported:
	• Support signals 0-9, #, *
	• Support durations up to 5 seconds
Format	Integer
Default Value	3000
Range	Not Applicable
Example	sip rtp port: 3000
Parameter –	Configuration Files
sip use basic codecs	aastra.cfg, <model>.cfg, <mac>.cfg
Description	Enables or disables basic codecs (G.711 u-Law, G.711 a-Law, G.729). Enabling this
	parameter allows the IP phone to use the basic Codecs when sending/receiving RTP
	packets.
Format	Boolean
Default Value	0
Range	0 - Disable
	1 - Enable
Example	sip use basic codecs: 1
Parameter –	Configuration Files
sip amr codec payload format	aastra.cfg, <model>.cfg <mac>.cfg
Description	Specifies the payload format for the AMR/AMR-WB codec.
Format	Integer
Default Value	0
Range	0-2
	0 (Enable bandwidth efficient mode per RFC, no octet-aligned header is in the INVITE
	SDP [default]).
	1 (Enable octet-aligned mode and add octet-align:1 in SDP,
	negotiate mode for incoming calls).
	2 (Disable octet-aligned mode and add octet-align:0 in SDP,
	negotiate mode for incoming calls).
Example	sip amr codec payload format: 1

A-99 41-001343-02 REV04 – 05.2014