OfficeServ 7100 SPECIAL APPLICATIONSTECHNICAL MANUAL PART 2 JANUARY 20092.6.8available MGI channels. This is due to voice traffic possibilities. If it is not anticipatedthat all ITP keyphones will be in use at the same time the probability factor of nothaving a voice channel can be calculated based on the station activity or use. If an ITPkeyphone attempts to use an MGI card that does not have a voice channel available,the ITP keyphone display will show “No MGI Channels Available”The ITP 5100 series keyphones must be programmed to provide the keyphone IPaddress, subnet mask, router gateway (if used) and MP10/MP10a (IP Server) address.Each ITP keyphone must also have a User ID and Password. This User ID andPassword must match the User ID and Password in the OfficeServ 7100 system (MMC840: IP SET INFO). The ID and Password are used to register the ITP keyphone to theOfficeServ 7100 and retain the number associated with that particular ITP keyphone.The ITP keyphones will register with the MP10/MP10a and be provided a defaultextension number from the OfficeServ 7100 system provided the ID and passwordmatch. The assigned default numbers can easily be changed to match the iDCSkeyphone station numbering plan. New ITP keyphone registrations can be enabled ordisabled via MMC 840 and MMC 841: IP SET INFO, SYS IP OPTN. See Figure 4 for therelationship of ITP keyphone and iDCS keyphones.Figure 4. Connectivity of a call between an ITP Keyphone and iDCS Keyphone:ITP Keyphone to ITP Keyphone OperationWhen an ITP keyphone is connected and in conversation to another ITP keyphone theMGI card audio codec is not involved when called on the private network side. TheMP10/MP10a is involved to provide call setup and tear down, programmable buttonfunctions, displays and system feature accesses. However, an MGI port is used forsystem features such as conference and transfer or internal paging as needed. SeeFigure 5.LANMP10/MGIOn-board MGI or MGI-16 card