Installation and Administration Guide 41September 2001 Remote Office 9150 descriptionStation priorityYou can define the priority of a RLC port to which a station is assigned asnormal, high, IP only, or circuit only.Normal priorityWhen both the IP and PSTN networks are used to route calls, calls to and fromthe station are routed primarily over the IP network. Calls transition between theIP and PSTN networks whenever voice QoS levels change. (The voice QoSlevels are defined on the Quality of Service screen on the RLC for your RemoteOffice 9150 unit.)High priorityWhen you define an RLC port as high priority, the associated station has thefollowing benefits:n If allowed to use the IP network to process calls (this is transparent to theuser), an active call on that station is always one of the first to transition toPSTN trunks when Voice over IP QoS degrades. (This transition isaccomplished using the QoS Transitioning Technology.)n Call blocking is reduced because bandwidth is always available to thesestations.Note: If the reserved bandwidth is being used by other high prioritystations, then new calls are processed using unreserved bandwidth.The number of stations that you can configure as high priority depends on theamount of available bandwidth. Ensure that enough bandwidth is available toprocess calls on normal priority stations.IP onlyCalls to and from the station are routed over the IP network only. QoStransitioning is not available for stations that are defined as IP only.
