344 Matrix ETERNITY NE System Manual
When G.723 is negotiated, the selected Bit Rate will be applied only when sending the RTP packets.
When receiving RTP packets from the remote end, both Bit Rates of G.723 will be accepted.
• Select the check box Silence Suppression to suppress the 'Silence' packets, and to allow only the Voice
packets through. SARVAM UCS supports Silence Suppression for all Vocoders except GSM FR. Default:
Disabled.
• Select the check box Send Silence Suppression Attribute, if you want the system to include
the"silencesupp" media attribute in the SDP body. If you do not want the system to include the
"silencesupp" media attribute in the SDP body, clear this check box.By default it is enabled.
Silence Suppression Attribute is not dependent on the Silence Suppression option set.
• Select the DTMF Option.
The DTMF option you select will determine how the DTMF digits will be sent over the IP Network, when a
DTMF digit is pressed.
SARVAM UCS supports the DTMF options: RTP (RFC 2833), SIP Info, and In-Band. Select the
appropriate option. Default: RTP (RFC 2833).
• If you have selected RTP (RFC 2833) as the DTMF Type, you must configure the value of RFC2833
Payload Type. The RTP packets will be tagged as DTMF as per the set value. The value of RFC2833
Payload Type can be set from 96 to 127.
Gain Settings
To avoid noise or echo during speech on SIP Trunks, you must set the speech volume levels (Tx and Rx Gain) on
SIP Trunk with reference to other ports.
To Next Page
