PMP Synchronization Solutions User Guide CMM4 and Controller BoardPMP-0297 007v001 (January, 2017) 3-2CMM4 and Controller BoardThe Cluster Management Module 4 (CMM4) provides power, sync, and network connectivity forup to eight APs, backhauls, and Ethernet terrestrial feeds in a variety of configurations. The CMM4provides• Sync over Power over Ethernet and integrated surge suppression on the controller board forup to 8 APs or BHs. Both a custom 30 VDC power scheme and a custom 56 VDC powerscheme are available. Neither is the same as the later IEEE Standard 802.3af, and neither iscompatible with it.• Managed switching using a hardened EtherWAN switch (1090CKHH models). The CMM4 shipswith a 14-port EtherWAN switch and is also available without a switch. The CMM4 originallyshipped with a 9-port EtherWAN switch.• A weather-tight enclosure with either 4 or 7 glands/ports for Ethernet and power cables (1090and 1091 models).• Surge suppression on the controller board for the incoming 30V DC and 54V DC power linesand GPS coax cable.• Auto-negotiation on the Ethernet ports. Ports will auto-negotiate to match inputs that areeither 100Base-T or 10Base-T, and either full duplex or half duplex, when the connected deviceis set to auto-negotiate. Alternatively, these parameters are settable.• An always-on NTP (Network Time Protocol) server that can provide date and time to any radiothat can reach the CMM’s management IP address.Table 1 shows model numbers and Ethernet switch configurations.Table 1 CMM4 model numbers and Ethernet switch configurationsCMM4Model No.CMM4ExtendedModelNo.EtherWAN SwitchCableglands(ports)TotalPorts10/100Base-TXPorts10/100/1000Base-TXPorts1090CK1090CKHH(currentunits)14 12 2 71090CKAA(earlierunits)9 8 1 41091HH – No Switch 71092HH(Rackmount) – No Switch –
