User guide

March 2005 Understanding Canopy Networks
Through Software Release 6.1
Page 70 of 425 Issue 1
Canopy System User Guide
Figure 30: GPS timing throughout the Canopy network
7.2.2 Passing Sync in a Single Hop
In releases earlier than Release 4.0, network sync can be delivered in only one over the
air link in any of the following network designs:
◦ Design 1
1. A CMM provides sync to a collocated AP.
2. This AP sends the sync over the air to SMs.
◦ Design 2
1. A CMM provides sync to a collocated BH timing master.
2. This BH timing master sends the sync over the air to a BH timing slave.
7.2.3 Passing Sync in an Additional Hop
In Release 4.0 and later releases, network sync can be either delivered as described
above or extended by one additional link in any of the following network designs:

NOTE:
In each of these following designs, Link 2 is not on the same frequency
band as Link 4. (For example, Link 2 may be a 5.2-GHz link while Link 4
is a 5.7- or 2.4-GHz link.)
◦ Design 3
1. A CMM provides sync to a collocated AP.
2. This AP sends the sync over the air to an SM.
3. This SM delivers the sync to a collocated AP.
4. This AP passes the sync in the additional link over the air to SMs.