Optimizing Soundpoint - Polycom SoundPoint IP 600 SIP Administrator's Manual

Administrator Guide - SoundPoint

4 Optimizing SoundPoint

4.1 Ethernet Switch
SoundPoint
Ethernet switch that runs at full line-rate. The Ethernet switch allows a personal com-
puter and other Ethernet devices to connect to the office LAN by daisy chaining
through the telephone, eliminating the need for a stand-alone hub. The
SoundPoint
phone. SoundPoint
powered (power supplied via the signaling or idle pairs of the LAN Ethernet cable).
Line powering typically requires that the telephone plug directly into a dedicated LAN
jack. Devices that do not require LAN power can then plug into the SoundPoint
PC Ethernet port.
SoundPoint
To help ensure good voice quality, the Ethernet switch embedded in the
SoundPoint
phone higher transmit priority than those from a device connected to the PC port. If
not using a VLAN (VLAN blank in the setup menu), this will automatically be the
case. If using a VLAN, ensure that the 802.1p priorities for both default and RTP
packet types are set to 2 or greater. Otherwise, these packets will compete equally
with those from the PC port. For more information, see 4.6.1.7 Quality of Service
<QOS/> on page 78.
4.2 Application Network Setup
4.2.1 RTP Ports
SoundPoint
Time Applications. Consistent with RFC 1889, SoundPoint
as bi-directional from a control perspective and expects that both RTP endpoints will
negotiate the respective destination IP addresses and ports. This allows RTCP to oper-
ate correctly even with RTP media flowing in only a single direction, or not at all. It
also allows greater security: packets from unauthorized sources can be rejected.
SoundPoint
address. Packets arriving from a non-negotiated IP address can be discarded.
®
IP
®
IP contains two Ethernet ports, labeled LAN and PC, and an embedded
®
IP switch gives higher transmit priority to packets originating in the tele-
®
IP can be powered via a local AC power adapter or can be line-
®
IP 500 Switch - Port Priorities
® IP should be configured to give voice traffic emanating from the tele-
®
IP is compatible with RFC 1889 - RTP: A Transport Protocol for Real-
®
IP can filter incoming RTP packets arriving on a particular port by IP
Copyright © 2004 Polycom, Inc.
Optimizing SoundPoint
®
® IP treats all RTP streams
IP
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