User guide

Network Components Exploring the Scope of Solutions
48
pmp-0229 (Mar 2013)
The CMMmicro contains an 8-port managed switch that supports Power over Ethernet (PoE) on
each port and connects any combination of APs, BHMs, BHSs, or Ethernet feed. The Cambium
fixed wireless broadband IP networks PoE differs from IEEE Standard 803.3af PoE, and the two
should not be intermixed. The CMMmicro can auto-negotiate speed to match inputs that are either
100Base-TX or 10Base-T, and either full duplex or half duplex, where the connected device is set
to auto-negotiate. Alternatively, these parameters are settable.
A CMMmicro requires only one cable, terminating in an RJ-45 connector, for each connected
module to distribute
• Ethernet signaling.
• power to as many as 8 co-located modules—APs, BHMs, or BHSs. Through a browser
interface to the managed switch, ports can be powered or not.
• sync to APs and BHMs. The CMMmicro receives 1-pulse per second timing information from
Global Positioning System (GPS) satellites through an antenna (included) and passes the
timing pulse embedded in the 24-V power to the connected modules.
GPS status information is available at the CMMmicro, however
• CMMmicro provides time and date information to BHMs and APs if both the CMMmicro is
operating on CMMmicro Release 2.1 or later and the AP/BHM is operating on System
Release 4.2 or later. See Time Tab of the AP on Page 198.
• CMMmicro does not provide time and date information to BHMs and APs if either the
CMMmicro is operating on a release earlier than CMMmicro Release 2.1 or the AP/BHM is
operating on a release earlier than System Release 4.2.
A CMMmicro is pictured in Figure 11 and Figure 12.
Figure 11: CMMmicro
Figure 12: Pole-mounted CMMmicro
This product is supported by its own dedicated user guide.