Polycom G7500 Reference Manual page 62

Increase the MTU if the network is burdened with unnecessary overhead (packets might be too
small).
1260 (default)
660
780
900
1020
1140
1500
qos.rsvp.enable
If enabled, the system can use the Resource Reservation Setup Protocol (RSVP) to request that
routers reserve bandwidth along an IP connection path. (To use this feature, the near and far
site must support RSVP.)
1 (default)
0
Polycom, Inc.
Quality of Service Parameters
60