Aastra Telecom 57I C53I manual RTP Settings

Administrator Options

Administrator Level Options

•Registration Renewal Timer

The length of time, in seconds, prior to expiration, that the phone renews registrations.

•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

•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-63.

•DTMF Method

(not configurable via IP phone UI). 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). Configurable on a global and per-line basis.

•Silence Suppression

Enables or disables the phone to use the negotiated silence suppression setting.

Administrator Options

41-001160-00, Rev 01 Release 2.0 3-19