User guide

Canopy System User Guide Network Components

pmp-0229 (Mar 2013)

CMM4 (Part 1090CK, 1091AA)

The Cluster Management Module 4 (CMM4) provides power, GPS timing from an antenna that is

included, and networking connections for an AP cluster, Backhauls, and Ethernet terrestrial feeds

in a variety of configurations. The CMM4 provides reliable GPS network synchronization with an

integrated solution that includes

• 9 access ports: eight 10/100Base-T ports and one copper 10/100/1000Base-T port

• a full featured Ethernet switch

• a Gigabit Ethernet port

• integrated lightning surge suppression on every data line, the GPS interface, the 29 V DC

power inputs, and the coax line. These points include all RJ11 and RJ45 connectors.

The CMM4 has four major hardware components:

• the Cluster Controller. The controller injects power and synchronization on a per-port basis

and is configured using a web or SNMP interface.

• a separate hardened Ethernet switch housed within the same weatherized enclosure. This

switch integrates switching technology with its own separate web-based and SNMP

management functions and provides a full array of networking features.

• the GPS system. This includes an integrated GPS board, an antenna, and brackets for pole

mounting the antenna.

• the power supply unit. This is a 20-volt, 40-watt supply that outputs on two connectors.

The CMM4 supports:

• Power over Ethernet (PoE) using a proprietary 30- or 56-VDC scheme that differs from

IEEE Standard 803.af.

• synchronization and date and time on each port (when connected radio devices are configured

to receive synchronization via RJ11 sync port). When connected radio devices are receiving

sync over the power port, only synchronization signaling is retrieved (date and time

information may be synchronized by an NTP server in this configuration).

• Where the connected device is set to auto-negotiate, the CMM4 can auto-negotiate speed to

match inputs that are either 100Base-TX or 10Base-T, and either full duplex or half duplex.

Alternatively, these parameters are settable.

• management by a web browser, telnet, the console port, Prizm element management system,

or a network manager that uses SNMP.

• dual power supply input redundancy. (Power supply is sold separately). The enclosure

provides a 1-hole insert for a DC power cable gland.

This user guide introduces CMM4, but the dedicated Cluster Management Module 4 (CMM4)

User Guide provides full documentation on this product, including installation instructions.