AudioCodes 405HD, Administrator'S Manual, Page: 92 / 242

400HD Series IP Phones
Administrator's Manual 92 Document #: LTRT-11973
5.5.2 Configuring RTP Port Range and Payload Type
RTP Port Range and Payload Type can be configured.
 To configure RTP Port Range and Payload Type:
•
Use the table as reference.
Table 5-25: RTP Port Range and Payload Type Parameters
Parameter Description
voip/media/dtmf_payload
Defines the RTP payload type used for RFC 2833 DTMF relay
packets.
Range: 96 - 127. Default: 101.
voip/media/media_port Defines the base port for the range of Real Time Protocol
(RTP) voice transport ports which the enterprise IT
administrator must open on the network's firewall.
Default: 4000. Valid possible ports (if the default is selected as
base port): 4000-4126. If, for example, 5000 is selected as the
base port, the valid possible ports will be 5000-5126.
5.5.3 Configuring RTP QoS
RTP QoS can be configured.

To configure RTP QoS:
• Use the table as reference.
Table 5-26: RTP QoS Parameter
Parameter Description
voip/media/media_tos QoS in hexadecimal format. This is a part of the IP header
that defines the type of routing service to tag outgoing voice
packets originated from the phone. It informs routers that this
packet must receive a specific QoS. The default value is
0xb8 .
Values can be set in decimal (e.g., 184) or hexadecimal
(e.g., 0xb8). Default: 184.