BHS to AP sync

Our company has recently seen interference come into the area from what we believe to be other Canopy 2.4 Access Points. So, on our main tower we installed a CMM2 that has attached to it a 2.4 AP and a 5.7 BH. They both have the timing cables run, and are working fine. We read that you can pass sync from the BH Master to the BH Slave, and onto an AP at the site of the BH Slave. Our BHS and AP communicate with each other thru a switch. How is the AP supposed to receive timing from the BHS without a timing cable or CMM?

ezensign wrote:
How is the AP supposed to receive timing from the BHS without a timing cable or CMM?


It's not possible without the timing cable.

Why in the manual does it show that it can be done like this?

1. A CMM provides sync to a collocated BHM or the BHM generates timing.
2. This BHM sends the sync over the air to a BHS.
3. This BHS delivers the sync to a collocated AP.
4. This AP passes the sync in the additional link over the air to SMs.

The wonderful design setup in the Canopy manuals does not say one way or the other how the AP gets the Sync from the BHS, but it shows the setup without another CMM at the remote site. Should there simply be a timing cable direct from the BHS to the AP?

Yes, RJ11 with 6 pins. 1 and 6 are for the timing.

Thanks for the Info. On the subject, I am going to order a timing device that will do the timing over the ethernet. Other than the CMM micro, has anyone tried other devices, such as the CTM-1m.DT2 from Last Mile Gear? [http://www.lastmilegear.com/product.php?id=708
]