System information
Integrating Polycom HDX Systems with Siemens OpenScape 
33 
○  ICMP Transmission Rate Limit (millisec)  Specifies the minimum number of milliseconds 
between transmitted packets. Enter a number between 0 and 60000. The default value of 1000 
signifies that the system sends 1 packet per second. If you enter 0, the transmission rate limit is 
disabled. This setting applies only to error ICMP packets. This setting has no effect on 
informational ICMP packets, such as echo requests and replies. 
○  Generate Destination Unreachable Messages  Generates a Destination Unreachable message 
if a packet cannot be delivered to its destination for reasons other than network congestion. 
○  Respond to Broadcast and Multicast Echo Requests  Sends an Echo Reply message in 
response to a broadcast or multicast Echo Request, which is not specifically addressed to the 
HDX system. 
○  IPv6 DAD Transmit Count  Choose to send 1, 2, or 3 Duplicate Address Detection (DAD) 
messages before acquiring an IPv6 address. The HDX system sends DAD messages to determine 
if the address it is requesting is already in use. 
○  Enable PC LAN Port  Check this box to enable the PC LAN port on the back of Polycom HDX 
4000 and 4500, HDX 7000, HDX 8000, or HDX 9006 system. Disable this setting for increased 
security. This option is not available on the Polycom HDX 6000 or 9000. 
○  Enable EAP/802.1X  Check this option to enable the EAP/802.1X authentication protocol. 
Polycom HDX systems support the following authentication protocols: 
»  EAP -MD5 
»  EAP-PEAPv0 (MSCHAPv2) 
»  EAP-TTLS 
»  EAP-TLS 
○  Enable 802.1p/Q  Check this box to specify whether VLAN and link layer priorities are 
enabled. The following optional QoS settings are available only when 802.1p/Q is enabled and 
only on the web interface: 
»  VLAN ID  Specifies the identification of the Virtual LAN. The value can be any number from 
1 to 4094. 
»  Video Priority  Sets the link layer priority of video traffic on the LAN. Video traffic is any 
RTP traffic consisting of video data and any associated RTCP traffic. The value can be any 
number from 0 to 7, although 6 and 7 are not recommended. 
»  Audio Priority  Sets the priority of audio traffic on the LAN. Audio traffic is any RTP traffic 
consisting of audio data and any associated RTCP traffic. The value can be any number from 
0 to 7, although 6 and 7 are not recommended. 
»  Control Priority  Sets the priority of control traffic on the LAN. You can choose a value from 
0 to 7, although 6 and 7 are not recommended. Control traffic is any traffic consisting of 
control information associated with a call and can include: 
•  H.323  H.225.0 Call Signaling, H.225.0 RAS, H.245, Far End Camera Control 










