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HMP Linux 1.2 Release Update, Rev 05 — September 2006 20
• If using a non-Global Call call control stack, the application should stop RTP
sessions by using ipm_Stop().
• Using the dlstop and dlstart commands to stop and then start HMP.
• An application should not open more than 1024 files in a process. If an application
needs to use many files for media operations, the files should be opened and closed
as needed instead of keeping them open throughout the process.
Voice
• The dx_reciottdata() and dx_playiottdata() functions do not support recording or
playing in WAVE format to/from memory; only VOX format.
• Global Tone Detection (GTD) does not support detecting user defined tones as digits
via the digit queue; the tones are only detected as tone events via the event queue.
• For dual tone definition, the frequency deviation that is defined in the tone template for
each frequency must be not less than ± 30 Hz.
• For single tone definition, the frequency deviation that is defined in the tone template
for each frequency must be not less than ± 30 Hz.
• The number of tone templates which can be added to a voice device and enabled for
detection is limited. The maximum number of events for each instance is 10.
• The dx_dial() function only detects CED tones for CR_FAXTONE event. CNG tones
cannot be detected.
• The dx_playtoneEx() function will not terminate after the time specified by the
DX_MAXTIME termination parameter has elapsed.
• DTMF digits not processed by the user application with dx_getdig() or other means
remain in the device after it is closed with dx_close(), and remain with the device
even after the application terminates. To ensure that the buffer is empty, clear the digit
buffer using dx_clrdigbuf().
• The dx_getctinfo() and fx_getctinfo() functions return incorrect values for Device
Family and Bus Mode.
• G.711 10 ms is not supported at densities above 120 channels.
• G.726 is not supported at densities above 120 channels.
Demos
• Demos are intended to be run using a maximum of 4 channels. Also, the channel
numbers selected for the demo should be 120 or lower. Using channel numbers
higher than 120 could cause the demo to fail.
Resolved Restrictions and Limitations
The following Restrictions and Limitations have been resolved:
Host-based H.323 Protocol Stack