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decoding while using an attached video camera.
Decoder Formats* This option is used to allow negotiation of different audio formats for
inbound calls.
H263 Parameters* This is the selection of the video conference mode resolution. To send the
largest picture, set to mode to CIF (default), for smaller picture resolution to QCIF and for the smallest
picture resolution SQCIF.
DTMF Support this option is for selection for DTMF support. The device will send out
DTMF signals based on this selection, to ensure that it can properly communicate with all types of SIP
equipment. Two options are available:
Inband DTMF – allows the device to send the actual sound that represents the DTMF selection.
Outband DTMF – allows the device to send the DTMF signal that represents the DTMF selection. In
provider infrastructures the usual selection is Outband DTMF since it is more reliable and greatly reduces
the misfiring of the DTFM detecting engines.
Jitter Range This is the Jitter range in milliseconds. High jitter values allow devices to
communicate better in high latency networks. Low jitter values are used in low latency networks for
improved voice quality. The default value of this filed is: 30-300
Enable Echo Cancel Checking this option will enable the Echo Cancel of the device. This is
required to reduce acoustic echo.
Enable VAD This option will allow activation of the Voice Activated Detection (VAD)
functionality which will enhance the overall bandwidth performance of the device reducing the consumed
bandwidth with at least 25% percent.
Packet Size This is the packet size in milliseconds. Packets Sizes vary in different
when using different codecs and connect to different gateway servers. The default value is 30 ms packet
size.
RTP Encryption The option allows RTP (voice/video data) encryption among SIP proxy,
SIP gateway, and SIP CPE devices. This is a proprietary SIP messages encryption protocol.
RTP Media Port Range This is the port range for the RTP media. RTP is the stream that carries
the encoded voice. Default values are: 16000-63000
RTP TOS This is the RTP media Type-of-Service (TOS) packet setting. The default
value is: 0x10
Error Correction This option will enable error correction for video and audio tranmisssions.
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