If it looks like it could cause a problem, don’t use it. Register 22 is for an “add/drop” setup. That allows you to build a repeater with two radios and an FXO board to add and drop lines at a site while synchronizing the radios. I am not familiar with the actual build design, but I could figure it out. We have notes somewhere. Remember, “ff” will set to default. If using Ethernet on a PtP link, use s/w 2.50m and set register 27 to “00”. That will disable the Enet filter. You need s/w 2.49 or higher to support 5.4-5.7 GHz. Let us know if/when you have questions. Shamus Jennings Technical Services Carlson Wireless Technologies www.carlsonwireless.com Location Value Interpretation - All values are hexadecimal 00 SFD - must be between 20 and FO 01 Transmitter power - defaults to 32 (3 per dB) 02 Receiver gain - defaults to 0 03 Frequency band: 00 = 2.4G lower, 01 = 2.4G upper. 02 = 4.9 lower, 03 = 4.9 upper, 04 = 5.8 lower, 05 = 5.8 upper 04 Telephony configuration, bit 01 = E1PCM (A-law), 02 = 12khz tone. 04 = SPM enable, 08 = loop enable 05 Deployment distance: 01 for long (>24 miles) 06 Special functions: currently unused 07 PN11 mode: 01 changes radio chipping format for more bandwidth;/experimental 08 FREQ override: 01-03 overrides panel or board switch frequency selection (switch must be set to 0) 09 CDMA override : 01-03 overrides panel or board switch code selection (switch must be set to 0) OA Time Slot override : 01-03 overrides panel or board switch TS selection (switch must be set to 0) OB Receive audio (duslic)/ring ; 00 = RLR -4.1 , 01 = RLR -3 .1, 02 = RLR -2 .1. 03 = RLR -1.1,04 = RLR -0.1, 05 = 50Hz ring, 06 = 80hz ring 0C Transmit audio GX filter, aNects qlslac output gain, values 00-04 0D Old configuration address, not used OE Transmit channel count and mode 0F Data channel count and mode 10 CPE 0 configuration data/voice 11 CPE 1 configuration data/voice 12 CPE 2 configuration data/voice 13 CPE 3 configuration data/voice 14 Repeated data channel count; must be set on base and repeater slave to number of data channels passed 15 Disables front panel if set to 01 16 Extra transmit channel timeslot (not advised) 17 FXS receive audio level, 1 db louder per count above 0 18 Dynamic squelch, 1 for CPE self-adjust 19 Long loop = 01 for high battery 1A undefined 1B undefined 1C undefined 1D Test mux value - test bench use only, should be FF 1E RSSI THRESHOLD 1F undefined 20 Signaling filter count: number of 3ms frames for signal changes to be passed through (debounced) 21 CPE concentration enabled if = 01 22 Add/drop setup : 01 lor transmitter, 02 for receiver 23 Enable old slic compatibility mode (+6db gain) for FXO card 24 Enable PBX functions such as DTMF detect 25 Enable ringdown function 26 Line mask for ringdowns 27 Enable Ethernet MAC address filtering 28 Sets TIMING_CONTOL to tx continuous for FCC --- Backplane SFD override (bench use only!) 29 undefined