Dialogic 05-2548-006 사용자 설명서
22
Dialogic
®
Multimedia Software for ATCA Release 1.0 Release Update, Rev 06 — January 23, 2008
Dialogic Corporation
•
To retrieve T.38 fax port information, set the eMediaType field to
MEDIATYPE_LOCAL_UDPTL_T38_INFO and unCount to 1.
MEDIATYPE_LOCAL_UDPTL_T38_INFO and unCount to 1.
Note: It is not possible to retrieve T.38 fax port information together with audio and/or
video port information.
Note: The RTCP port number is the RTP port number + 1.
Update to the ipm_GetLocalMediaInfo( ) function
In the code example of the ipm_GetLocalMediaInfo( ) function, replace the line:
MediaInfo.unCount = 1;
with:
MediaInfo.unCount = 2;
Update to the ipm_ReceiveDigits( ) function
Not supported for the ATCA Multimedia Platform.
Update to the ipm_SendDigits( ) function
Not supported for the ATCA Multimedia Platform.
Updates to the ipm_SetParm( ) and ipm_GetParm( ) functions
In addition to the parameters documented in Table 2, “eIP_PARM Parameters and
Values” on the IPM_PARM_INFO data structure reference page, the IP Media Library
API supports the setting and retrieval of the following parameters relating to Packet
Loss Recovery (PLR) latency.
Values” on the IPM_PARM_INFO data structure reference page, the IP Media Library
API supports the setting and retrieval of the following parameters relating to Packet
Loss Recovery (PLR) latency.
eIP_PARM Define
Description and Values
PARMCH_LATENCYALG_AUDIO
Defines the mode of operation of the jitter buffer. By default,
the jitter buffer uses “adaptive mode,” which means latency can
grow until the available number of frames (PARMCH_
LATENCYFRAMEMAX_AUDIO) is depleted. Using fixed
mode, the number of frames buffered can grow up to 1.5 times
the starting value (PARMCH_LATENCYFRAMEINIT_AUDIO).
the jitter buffer uses “adaptive mode,” which means latency can
grow until the available number of frames (PARMCH_
LATENCYFRAMEMAX_AUDIO) is depleted. Using fixed
mode, the number of frames buffered can grow up to 1.5 times
the starting value (PARMCH_LATENCYFRAMEINIT_AUDIO).
Type: Integer. Values: 0 (adaptive mode) or 1 (fixed mode).
Default: 0.
Default: 0.
Note: Use “adaptive mode” to minimize audio loss due to
abnormal packet reception conditions. Use “fixed mode”
to minimize latency growth by sacrificing audio quality.
to minimize latency growth by sacrificing audio quality.