Draft 1 – Aastra Telecom 9480i Series User Manual
Page 284
Global SIP Settings
4-102
41-001160-03, Rev 00, Releaes 2.4
IP Phone Administrator Guide
6
Select a method to use from the “DTMF Method” list box. Valid values are RTP, SIP Info, Both.
Default is RTP.
Note: You can configure the DTMF Method on a global or per-line basis.
7
Select the type of RTP encryption to use from the “RTP Encryption” list box. Valid values are SRTP
Disabled, SRTP Preferred, or SRTP Only. Default is SRTP Disabled.
Note: You can configure RTP Encryption on a global or per-line basis.
8
The “Silence Suppression” field is enabled by default. Disable this field by unchecking the check
box.
When enabled, the phone negotiates whether or not to use silence suppression. Disabling this
feature forces the phone to ignore any negotiated value.
9
Click
to save your changes.
Aastra Web UI
Step
Action
Draft 1