Communication Server 1000 capacity 59Number ofusersParameter Up to 6 CCSper UserUp to 12 CCSper UserUp to 18 CCSper UserUp to 24 CCSper UserPSTN 68 125 180 238300SIP AccessPort136 250 360 476PSTN 82 162 238 317400SIP AccessPort164 324 476 634PSTN 106 198 297 396500SIP AccessPort212 396 594 792PSTN 125 238 356 475600SIP AccessPort250 476 712 950PSTN 144 277 416 554700SIP AccessPort288 554 832 1108PSTN 162 317 475 633800SIP AccessPort324 634 950 1266PSTN 180 356 534 712900SIP AccessPort360 712 1068 1424PSTN 198 396 594 7921000SIP AccessPort396 792 1188 1584ExampleIn a system with 100 users and 6 CCS per User, use Table 9 "Poisson trunktable" (page 58) to locate 100 in the Number of Users column. Use the Upto 6 CCS per User column to find the following parameters:• PSTN = 28• SIP Access Port = 56Trunk calculation: Method 2To determine the number of PSTN trunks required, add the number ofMCC 3100 for BlackBerry, MCC 3100 for Nokia, and MCC 3100 for WindowsMobile users to obtain the total number of users. Multiply the total numberof users by the desired CCS per User number to obtain a CCS value.Nortel Mobile Communication 3100 Series PortfolioNortel Mobile Communication 3100 — Planning and EngineeringNN42030-200 01.09 StandardRelease 2.0 1 November 2007Copyright © 2007, Nortel Networks.