Aastra Telecom SIP 57I - Manual (Page 113)

Administrator Level Options
41-001160-00, Release 2.1, Rev 04 3-55
Administrator Options
Administrator Options
N/A Customized Codec
Preference List sip customized codec Specifies a customized Codec
preference list which allows you to
use the preferred Codecs for this IP
phone.
For more information, see Chapter
4,
“Real-time Transport Protocol
(RTP) Settings” on page 4-64 .
N/A DTMF Method sip dtmf method
(global)
sip lineN dtmf method
(per-line)
Sets the dual-tone multifrequency
(DTMF) method to use on the IP
phone on a global or per-line basis.
Valid values are 0 (RTP), 1 (SIP
INFO), or 2 (BOTH). Default is 0
(RTP).
For more information, see Chapter
4,
“Real-time Transport Protocol
(RTP) Settings” on page 4-64 .
N/A RTP Encryption sip srtp mode
(global)
sip lineN srtp mode
(per-line)
This parameter determines if SRTP
is enabled on this IP phone, as
follows:
• If set to 0, then disable SRTP.
• If set to 1 then SRTP calls are
preferred.
• If set to 2, then SRTP calls only
are generated/accepted.
For more information, see Chapter
4,
“Real-time Transport Protocol
(RTP) Settings” on page 4-64 .
N/A Silence Suppression sip silence suppression Silence suppression is enabled by
default on the IP phones. The
phone negotiates whether or not to
use silence suppression. Disabling
this feature forces the phone to
ignore any negotiated value.
For more information, see Chapter
4,
“Real-time Transport Protocol
(RTP) Settings” on page 4-64 .
Parameter In
IP Phone UI
Parameter in
Aastra Web UI
Parameters in
Configuration Files Description