Aastra 480i Administrator's Manual page 52

IP Phone Administrator Guide
Administrator Level Options
• BLF Subscription Period
Specifies the time period, in seconds, that the BLF feature becomes active
again after a software/firmware upgrade or after a reboot of the IP phone.
RTP Settings
You can configure the following RTP settings:
• RTP Port
(RTP Port Base in IP Phone UI)
The Real-Time Transport Protocol port base configured for the IP phone.
Default is 3000.
• Basic Codecs (G.711 u-Law, G.711 a-Law, G.729)
(not configurable via IP phone UI). Enables or disables basic codecs.
Enabling this parameter allows the IP phone to use the basic Codecs when
sending/receiving RTP packets. Valid values are 0 (disabled) and 1 (enabled).
Default is 0 (disabled).
• Force RFC2833 Out-of-Band DTMF
(not configurable via IP phone UI). Enables or disables out-of-band DTMF.
Enabling this parameter forces the IP phone to use out-of-band DTMF
according to RFC283. Valid values are 0 (disabled) and 1 (enabled). Default is
1 (enabled).
• Customized Codec Preference List
(not configurable via IP phone UI). Specifies a customized Codec preference
list which allows you to use the preferred Codecs for this IP phone. For valid
values, see Appendix A, the section,
page A-58.
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DFW Phone 972-992-4600
"RTP, Codec, DTMF Global Settings"
41-001129-00 Rev 09, Release 1.4.1
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