Aastra Telecom SISIP 57I CT - Manual (Page 406)

Operational, Basic, and Advanced Parameters
A-64 41-001160-00, Rev 01 Release 2.0
IP Phone Administrator Guide
Appendix A
Parameter –
sip out-of-band dtmf
Force RFC2833 Out-of-Band
DTMF
(in Web UI)
Aastra Web UI Advanced Settings->Global SIP->RTP Settings
Configuration Files aastra.cfg, .cfg
Description Enables or disables out-of-band DTMF. Enabling this parameter forces
the IP phone to use out-of-band DTMF according to RFC2833.
Format Boolean
Default Value 1
Range 0 - Disable
1 - Enable
Example sip out-of-band dtmf: 0
Parameter –
sip customized codec
Customized Codec Preference
List
(in Web UI)
Aastra Web UI Advanced Settings->Global SIP->RTP Settings
Configuration Files aastra.cfg, .cfg
Description Specifies a customized Codec preference list which allows you to use
the preferred Codecs for this IP phone.
Format Comma-separated list of semicolon-separated values
Default Value Not Applicable
Range Valid values for the syntax are:
payload
0 for G.711 m-Law
8 for G.711 a-Law
18 for G.729a
ptime (in milliseconds) 5, 10, 15, 20........90
silsupp on, off
Example sip customized codec:
payload=8;ptime=10;silsupp=on,payload=0;ptime=10;
silsupp=off