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Grandstream Networks, Inc. HT-502 User Manual Page 17 of 32
Firmware 1.0.0.77 Last Updated: 1/2008
DTMF METHODS
DTMF Settings are in Profile pages
.
• DTMF in-audio
• DTMF via RTP (RFC2833)
• DTMF via SIP INFO
Enable one or more DTMF methods based on your PBX system.
PREFERRED VOCODER (CODEC)
The HT502 supports a broad range of voice codecs. Under Profile web pages, choose your preferred
order of different codecs:
• PCMU/A (or G711µ/a)
• G729 A/B/E
• G723
• G726 (16/24/32/40)
• iLBC