Optimus EP-44SIP Manual page 74

EP-44SIP(H) WEBSERVER
3.3.3. Media Streaming
Access the 'Media Streaming' page (Configuration tab > Voice Over IP menu > Media Streaming).
3.3.3.1. Media Streaming Parameters
RTP Port Range and Payload Type can be configured using the Web as described below.
To configure the RTP Port Range and Payload Type:
RTP Port Range [...]: Defines the base port for the range of Real‐Time Protocol (RTP) voice transport
ports that the enterprise IT administrator should open on the network firewall.
DTMF Relay RFC 2833 Payload Type: Defines the type of RTP payload used for RFC 2833 DTMF
relay packets.
Configure the RTP Port Range and Payload Type parameters and then click Submit.
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