PC Programming Manual References9.5.1 PBX Configuration—[1-1] Configuration—Slot—Site Property—Main—DSP Conference— DSPConference Priority9.33 PBX Configuration—[1-5] Configuration—DSP Resource5.1.17 DSP Resource ReservationDescriptionA number of resources can be reserved for particular features or services to guarantee a minimum level ofservice. Resources reserved for a particular service (e.g., conferencing) cannot be used for another service(e.g., Unified Messaging).For example, one may want to reserve resources for OGM (Outgoing Message) to ensure that recordedmessages can be played to incoming calls.The resources can be reserved for the following types of services:• VoIP (G.711)• Conference CO line• Unified Messaging• Two-way Recording• OGMNoteIt is not necessary to reserve resources for a feature to use it. In normal operation, free DSP resourcesare allocated on a first-come first-serve basis. Resources should be reserved only if a minimum level ofperformance is required for your system.For example, reserving resources for Two-way Recording (® 20.1.9 Unified Messaging—AutomaticTwo-way Recording for Manager, ® 20.1.90 Unified Messaging—Two-way Record/Two-way Transfer)also reserves UM ports. This can have the unintended effect of blocking access to the Unified Messagingsystem even when no recording is being performed. Therefore, resources for Two-way Recording shouldbe reserved only if it is necessary to guarantee that Two-way Recording can be performed.(® 20.1.2 UNIFIED MESSAGING FEATURES)Resource Reservation ExampleThe following table shows the number and types of resources that must be reserved for a given workload. Tocalculate the number of free (i.e., non-reserved) resources, a DSP M card (127 DSP resources) is assumed.Service Minimumperformance*1Resources per unit ofperformanceNo. of required DSPresourcesVoIP call (G.711) 40 calls 1 40Unified Messaging*2 5 operations 1.3 6.5Two-way recording 3 recordings 2.3 6.9OGM 10 playbacks 2 20Conference CO line*3 10 conferences 0.5 5Unified Messaging tone*4 2 tones 2 2Total Reserved Resources 80.4Document Version 2016-03 Feature Manual 1175.1.17 DSP Resource Reservation
