Aastra Telecom 480I CT manual BLF Subscription Period, RTP Settings, RTP Port

IP Phone Administrator Guide Administrator Level Options

Administrator 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, “RTP, Codec, DTMF Global Settings” on page A-58.

3-18 41-001129-00 Rev 09, Release 1.4.1