Aastra Telecom AASTRA 9112 I - Manual (Page 51)

New Features in 1.4.1
41-001024-00, Rev 09, Release 1.4.1 47
SIP IP Phone Models 480i, 480i CT, 9112i, 9133i Release Notes
Configuring via the Aastra Web UI
You can enable or disable the 480i CT single media path restriction at Advanced
Settings->Global SIP->RTP Settings.
Default Value 1
Range 0 - Disable
1 - Enable
Example two call support: 0
Two Call Support