Need help debugging connection problems (CBA850 & EM7565)

[Agl539]

I occasionally have to resort to a backup internet connection when my primary cable connection fails. I live in a canyon so my reception is dreadful. I wanted to see if I could improve this failover connection by relocating the CBA850 to the roof, installing a better modem and a pair of more capable antennas.
First hurdle I've hit is swapping out the LP6 EM7455 modem for the recently purchased (from The Wireless Haven) EM7565 which isn't connecting to my existing signal feed.
I've followed the CBA850 and EM7565 upgrade guides on here but still no luck and I'm out of ideas which was to look next. Ive tried latest generic and AT&T firmware.

My LTE service is a AT&T connected car plan. This has been working fine for 18 months connected to the CBA850LP6 device.

These are the logs and the status of the modem.

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Wed Dec 31st 17:18:57 1969	WAN:16ed8720.CPPM	INFO	Connecting device
Wed Dec 31st 17:18:57 1969	WAN:16ed8720.AutoAPNFront	INFO	Connected
Wed Dec 31st 17:18:57 1969	WAN:16ed8720.AutoSelect	INFO	Connected
Wed Dec 31st 17:18:57 1969	WAN:16ed8720.MultiSIMCritExit	INFO	Connected
Wed Dec 31st 17:18:57 1969	WAN:16ed8720.MultiSIM	INFO	Connected
Wed Dec 31st 17:18:57 1969	WAN:16ed8720.MultiSIMCritEnter	INFO	Connected
Wed Dec 31st 17:18:57 1969	WAN:16ed8720	INFO	signal EM7565 on port usb1: 90%, RSSI:-80(dBm), SINR:2.6(dB), RSRP:-112(dB), RSRQ:-11(dB), RFBAND: Band 13
Wed Dec 31st 17:18:57 1969	WAN:16ed8720	INFO	wandev connecting type: mdm, uid: 16ed8720, uptime: 1165
Wed Dec 31st 17:18:57 1969	WAN:16ed8720	INFO	disconnected -> connecting
Wed Dec 31st 17:18:57 1969	WAN:16ed8720	INFO	WanDevMixIn:Starting
Wed Dec 31st 17:18:57 1969	policy.WanChange	INFO	connect_next -> connect_wait (primary: None, next_dev: mdm-16ed8720)
Wed Dec 31st 17:18:57 1969	policy.WanChange	INFO	idle -> connect_next (primary: None, next_dev: mdm-16ed8720)
Wed Dec 31st 17:18:57 1969	policy.FailoverFailback	INFO	pick_next -> wait_for_next (primary: None, next_dev: mdm-16ed8720)
Wed Dec 31st 17:18:49 1969	policy.FailoverFailback	INFO	wait_for_next -> pick_next (primary: None, next_dev: None)
Wed Dec 31st 17:18:47 1969	policy.WanChange	INFO	connect_wait -> idle (primary: None, next_dev: None)
Wed Dec 31st 17:18:46 1969	WAN:16ed8720	ERR	connector failed: CPPM failed: no carrier
Wed Dec 31st 17:18:46 1969	WAN:16ed8720	INFO	disconnecting -> disconnected, Reason: Failover
Wed Dec 31st 17:18:46 1969	WAN:16ed8720	INFO	connecting -> disconnecting
Wed Dec 31st 17:18:46 1969	WAN:16ed8720	INFO	WanDevMixIn:stopStabilityCheck
Wed Dec 31st 17:18:46 1969	WAN:16ed8720	INFO	WanDevMixIn:stopStartDoneContCheck
Wed Dec 31st 17:18:46 1969	WAN:16ed8720.MultiSIMCritEnter	INFO	Disconnected
Wed Dec 31st 17:18:46 1969	WAN:16ed8720.MultiSIM	INFO	Disconnected
Wed Dec 31st 17:18:46 1969	WAN:16ed8720.MultiSIMCritExit	INFO	Disconnected
Wed Dec 31st 17:18:46 1969	WAN:16ed8720.AutoSelect	INFO	Disconnected
Wed Dec 31st 17:18:46 1969	WAN:16ed8720.AutoAPNFront	INFO	Disconnected
Wed Dec 31st 17:18:46 1969	WAN:16ed8720.CPPM	INFO	Disconnected
Wed Dec 31st 17:18:46 1969	WAN:16ed8720.CPPM	INFO	state=connecting result=no carrier
Wed Dec 31st 17:18:46 1969	WAN:16ed8720	INFO	Connect Event: no carrier - state: connecting
Wed Dec 31st 17:18:46 1969	cp_stack_mgr	INFO	usb1: LTE Modem data connection failed - status:9
Wed Dec 31st 17:18:04 1969	WAN:16ed8720.CPPM	INFO	Connecting device
Wed Dec 31st 17:18:04 1969	WAN:16ed8720.AutoAPNFront	INFO	Connected
Wed Dec 31st 17:18:04 1969	WAN:16ed8720.AutoSelect	INFO	Connected
Wed Dec 31st 17:18:04 1969	WAN:16ed8720.MultiSIMCritExit	INFO	Connected
Wed Dec 31st 17:18:04 1969	WAN:16ed8720.MultiSIM	INFO	Connected
Wed Dec 31st 17:18:04 1969	WAN:16ed8720.MultiSIMCritEnter	INFO	Connected
Wed Dec 31st 17:18:04 1969	WAN:16ed8720	INFO	signal EM7565 on port usb1: 90%, RSSI:-80(dBm), SINR:2.4(dB), RSRP:-112(dB), RSRQ:-11(dB), RFBAND: Band 13
Wed Dec 31st 17:18:04 1969	WAN:16ed8720	INFO	wandev connecting type: mdm, uid: 16ed8720, uptime: 1112
Wed Dec 31st 17:18:04 1969	WAN:16ed8720	INFO	disconnected -> connecting

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ATI
Manufacturer: Sierra Wireless, Incorporated
Model: EM7565
Revision: SWI9X50C_01.11.00.00 5ba42f jenkins 2019/06/28 09:51:52
IMEI: 353533xxxxxxxxx
IMEI SV: 10
FSN: UF940xxxxxxxxxx
+GCAP: +CGSM


AT!USBCOMP?
Config Index: 1
Config Type:  3 (Generic)
Interface bitmask: 0000010D (diag,nmea,modem,rmnet0)


AT+CPIN?
+CPIN: READY


AT!PRIID?
PRI Part Number: 9908685
Revision: 002.003
Customer: Generic-M2M
Carrier PRI: 9999999_9907259_SWI9X50C_01.11.00.00_00_GENERIC_002.023_000
Carrier PRI: 9999999_9907258_SWI9X50C_01.07.02.00_00_ATT_002.008_004
Carrier PRI: 9999999_9908789_SWI9X50C_01.08.04.00_00_SIERRA_002.001_000
Carrier PRI: 9999999_9907257_SWI9X50C_01.08.04.00_00_VERIZON_002.015_001



at!impref?
!IMPREF:
 preferred fw version:    01.11.00.00
 preferred carrier name:  GENERIC
 preferred config name:   GENERIC_002.023_000
 preferred subpri index:  000
 current fw version:      01.11.00.00
 current carrier name:    GENERIC
 current config name:     GENERIC_002.023_000
 current subpri index:    000
OK



at!image?

TYPE SLOT STATUS LRU FAILURES UNIQUE_ID   BUILD_ID
FW   1    GOOD   2   0 0      ?_?         01.08.04.00_?
FW   2    GOOD   4   0 0      ?_?         01.07.02.00_?
FW   3    GOOD   5   0 0      ?_?         01.11.00.00_?
FW   4    EMPTY  0   0 0
Max FW images: 4
Active FW image is at slot 3

TYPE SLOT STATUS LRU FAILURES UNIQUE_ID   BUILD_ID
PRI  FF   GOOD   0   0 0      002.008_004 01.07.02.00_ATT
PRI  FF   GOOD   0   0 0      002.023_000 01.11.00.00_GENERIC
PRI  FF   GOOD   0   0 0      002.001_000 01.08.04.00_SIERRA
PRI  FF   GOOD   0   0 0      002.015_001 01.08.04.00_VERIZON
Max PRI images: 50



at!gstatus?

!GSTATUS:
Current Time:  586              Temperature: 22
Reset Counter: 1                Mode:        ONLINE
System mode:   LTE              PS state:    Not attached
LTE band:      B13              LTE bw:      10 MHz
LTE Rx chan:   5230             LTE Tx chan: 23230
LTE SSC1 state:NOT ASSIGNED
LTE SSC2 state:NOT ASSIGNED
LTE SSC3 state:NOT ASSIGNED
LTE SSC4 state:NOT ASSIGNED
EMM state:     Deregistered     Attaching
RRC state:     RRC Idle\
IMS reg state: No Srv

PCC RxM RSSI:  -96              PCC RxM RSRP:  -129
PCC RxD RSSI:  -78              PCC RxD RSRP:  -106
Tx Power:      --               TAC:         3400 (13312)
RSRQ (dB):     -11.0            Cell ID:     00cdxxxx (1344xxxx)
SINR (dB):      3.2

and for comparison, these are the modem stats from the successful connection of the EM7455

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ATI

Manufacturer: Sierra Wireless, Incorporated
Model: MC7455
Revision: SWI9X30C_02.30.01.01 r7792 CARMD-EV-FRMWR2 2018/07/13 02:24:52
MEID: 3565260xxxxxx
IMEI: 356526070xxxxxx
IMEI SV: 16
FSN: LQ63941xxxxxx
+GCAP: +CGSM


AT!USBCOMP?
Config Index: 1
Config Type:  1 (Generic)
Interface bitmask: 0000050D (diag,nmea,modem,rmnet0,rmnet1)


AT!PRIID?
PRI Part Number: 9905117
Revision: 000.006
Customer: Cradlepoint
Carrier PRI: 9999999_9904594_SWI9X30C_02.30.01.01_00_ATT_002.049_002
Carrier PRI: 9999999_9904609_SWI9X30C_02.30.01.01_00_GENERIC_002.045_001
Carrier PRI: 9999999_9904779_SWI9X30C_02.30.01.01_00_SPRINT_002.045_000
Carrier PRI: 9999999_9904780_SWI9X30C_02.30.01.01_00_VERIZON_002.052_000


AT!IMPREF?
!IMPREF:
 preferred fw version:    02.30.01.01
 preferred carrier name:  ATT
 preferred config name:   ATT_002.049_002
 current fw version:      02.30.01.01
 current carrier name:    ATT
 current config name:     ATT_002.049_002
OK     


AT!IMAGE?
TYPE SLOT STATUS LRU FAILURES UNIQUE_ID   BUILD_ID
FW   1    GOOD   6   0 0      ?_?         02.05.07.00_?
FW   2    GOOD   7   0 0      ?_?         02.08.02.00_?
FW   3    GOOD   1   0 0      ?_?         02.14.03.02_?
FW   4    GOOD   8   0 0      ?_?         02.30.01.01_?
Max FW images: 4
Active FW image is at slot 4

TYPE SLOT STATUS LRU FAILURES UNIQUE_ID   BUILD_ID
PRI  FF   GOOD   0   0 0      002.049_002 02.30.01.01_ATT
PRI  FF   GOOD   0   0 0      002.045_001 02.30.01.01_GENERIC
PRI  FF   GOOD   0   0 0      002.045_000 02.30.01.01_SPRINT
PRI  FF   GOOD   0   0 0      002.052_000 02.30.01.01_VERIZON
Max PRI images: 50



OK
AT!GSTATUS?
!GSTATUS:
Current Time:  676              Temperature: 38
Reset Counter: 1                Mode:        ONLINE
System mode:   LTE              PS state:    Attached
LTE band:      B2               LTE bw:      20 MHz
LTE Rx chan:   850              LTE Tx chan: 18850
LTE CA state:  INACTIVE                 LTE Scell band:B12
LTE Scell bw:10 MHz             LTE Scell chan:5110
EMM state:     Registered       Normal Service
RRC state:     RRC Connected
IMS reg state: No Srv
                                                                                                                        
PCC RxM RSSI:  -54              RSRP (dBm):  -85
PCC RxD RSSI:  -95              RSRP (dBm):  -136
SCC RxM RSSI:  -66              RSRP (dBm):  -87
SCC RxD RSSI:  -107             RSRP (dBm):  -137
Tx Power:      --               TAC:         871D (34589)
RSRQ (dB):     -7.8             Cell ID:     0869xxxx (14112xxxx)
SINR (dB):     11.0

[JimHelms]

You are not registering with the network. Did you set your APN in the Connection Manager for the EM7565?

APN Default Override.png

Also, go to STATUS > INTERNET > CONNECTIONS > EM7565 > and go down to the Cellular Network and see if the APN (broadband) is listed in the Profile 1, 2, or 3.

[JimHelms]

Another issue I see is your signal stats:

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PCC RxM RSSI:  -96              PCC RxM RSRP:  -129
PCC RxD RSSI:  -78              PCC RxD RSRP:  -106

It appears something is going on with the MAIN (RxM) port of the modem. Notice the difference in the MAIN and the AUX (RXD) readings. These readings should be fairly close to one another.

This is usually caused by the MHF4 connector has popped off the modem connector port, or it is not seating good, or is grounding out on the metal portion of the modem.

That is assuming you have antennas hooked up to both.

[JimHelms]

Also notice the stats on the MC7455:

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PCC RxM RSSI:  -54              RSRP (dBm):  -85
PCC RxD RSSI:  -95              RSRP (dBm):  -136

They are right the opposite here which sort of hints to something in the antenna or cable system.

A quick test would be to reverse the antenna connectors and see if they reverse the disparity as well.

[Agl539]

I had broadband set as APN, as per screenshot

connmgr.jpg

setting.jpg

My external antenna is connected only to Main currently but will go and verify the signals etc.

[Agl539]

My antenna setup is far from optimal, and why I wanted to take a look to see if i could improve this setup.
I live in a canyon and reception frankly sucks. Currently I have been able to get 1mbps up, and about 5 mbps down reliable with the CBA8500LP6. I'm fully expecting to be purchasing a pair of new antennas from you too.
I'm using a single 450-2700MHz Radome 3dBi-6dBi 4G LTE Ultra Wide Band Omni-directional Antenna feeding into a
weBoost Connect 4G-X feeding directly into the main connection. This is why the main signal was "strong" and the aux was minimal, I actually had the LP6 connected to only main, where at the EM7565 I had connected main to my external antenna, and a rabbit ear from the cradle point to aux in case that affected anything. The signal strength in my home is very poor.
I omitted this detail trying to keep the original post somewhat reasonable in length. Sorry if this threw a curve ball into play. Appreciate your support. thank you.

[Agl539]

With the only antenna connected to Aux, these are the stats

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PCC RxM RSSI:  -93              PCC RxM RSRP:  -125                                                                     
PCC RxD RSSI:  -40              PCC RxD RSRP:  -67    

and with only antenna connected to main, these are the stats (I rebooted and moved the connector across)

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PCC RxM RSSI:  -77              PCC RxM RSRP:  -108                                                                     
PCC RxD RSSI:  -94              PCC RxD RSRP:  -134  

Does this look like the connection is poor?

[Agl539]

OK, I think Ive found the problem, user error as expected
The cable which comes from the weBoost to the SMA connector has a female connector, and the connector on the adapter I got from your store also has female.
The cheap enclosures I used previously from Amazon were male.

males.jpg

The CB850LP6 modem is also female so even though the CBA850 actually connects, the signal will be garbage so I need to get the right cables clearly. I suspect this is the right time to order the antennas too.

[Agl539]

I've just trying connecting my cradlepoint white ear antennas which at least have the right connector to my em7565 and get these figures (although appears to be stuck in 'attaching' mode which I suspect is due to poor signal reception).

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!GSTATUS:                                                                                                               
Current Time:  230              Temperature: 24                                                                         
Reset Counter: 1                Mode:        ONLINE                                                                     
System mode:   LTE              PS state:    Not attached                                                               
LTE band:      B66              LTE bw:      20 MHz                                                                     
LTE Rx chan:   0                LTE Tx chan: 132322                                                                     
LTE SSC1 state:NOT ASSIGNED                                                                                             
LTE SSC2 state:NOT ASSIGNED                                                                                             
LTE SSC3 state:NOT ASSIGNED                                                                                             
LTE SSC4 state:NOT ASSIGNED                                                                                             
EMM state:     Deregistered     Attaching                                                                               
RRC state:     RRC Idle                                                                                                 
IMS reg state: No Srv                                                                                                   
                                                                                                                        
PCC RxM RSSI:  -94              PCC RxM RSRP:  -133                                                                     
PCC RxD RSSI:  -78              PCC RxD RSRP:  -105                                                                     
Tx Power:      --               TAC:         3b44 (15172)                                                               
RSRQ (dB):     -7.5             Cell ID:     0154xxxxx (2229xxxx)                                                        
SINR (dB):      7.4   

[JimHelms]

The RxM is the MAIN antenna port on the modem and its connection must have a usable signal, regardless of the RxD signal which is used for diversity. It will not work the other way around (i.e., the AUX [RxD] having the usable signal while RxM does not).

In the image you posted of the black enclosure shows RP-SMA female connectors which require RP-SMA Male antenna/cable connectors. Not sure why these enclosures use RP-SMA connectors which are usually reserved for WiFi applications.

The white Cradlepoint paddle antennas are SMA Male. While the two connectors are similar, they are not compatible with one another.

SMA vs RP-SMA Connectors 2.png

[Agl539]

Thanks Jim, got some cables inbound to verify the modem is configured correctly.
I'll also order up some new antennas, I would like your opinion on what I should order from your store for the best chance of getting a workable signal in my situation. No line of sight to mast, and pretty heavy foliage.
With the incorrect cables (!!!), the weBoost, and EM7455 I'm seeing 1mbps up, 5mbps down. I'm not looking for 100mbps+ here, 5/20 would be useful enough as its only a failover for my cable connection to keep me able to surf and mail.

profile.jpg

[JimHelms]

Hmm... you are sort of in a valley.

How far away is the top of the first peak closest to you?

[Agl539]

hmmm, Its actually hard to tell because the view is obstructed by trees! Heres the view from the roofline in the direction of the cell tower Im connecting too. I'm guessing its a few hundred meters away.

treehell.jpg

Looking at that terrain profile, and those trees, I clearly need the "magic signal catcher" brand of antenna

[JimHelms]

Looking at that terrain profile, and those trees, I clearly need the "magic signal catcher" brand of antenna

Yes, or one that floats. haha

If it were just the trees, I would try a set of the 15dBi panels. But with the trees and being in a valley, perhaps a set of omni-directional would better at catch the signals that are being reflected/scattered/bounced off the trees and hill slope.

Maybe someone else can make a recommendation.

[Agl539]

I found a SMA converter today that adapted my RP SMA to enable me to test and my connection immediately came up with the em7565. I verified it works with the standard EM7455 modem as well and my speeds have improved to 20mbps down, and 4mbps up. I'm not seeing the same upload performance on my em7565 but thats probably a config issue. I'll do some more research and order up some antennas and cables this week to install over the holiday break.

[Agl539]

Received 2 700-2700MHz 15dBi 4G LTE Directional Antennas and 2 698-2700MHz 6dBi-8dBi 4G LTE Omni Antennas for testing. Also have an external enclosure so I can move my router closer to the antennas and reduce some cable loss too.

[Agl539]

Just sharing back for community (although will put a more detailed post up when Im finished testing).
With the omnidirectional antenna I see 11 down, 1 up, with the 15db flat panel literally thrown up and randomly pointed in the rough direction I see 28down, 9 up! This is just with a single panel still, no CA (due to waiting on LMR400 being delivered this weekend)

EDIT: Adding some modem stats from this connection

Signal Strength 82
RSSI -84 dBm
SINR 9.0 dB
RSRP -112 dB
RSRQ -6 dB

[Agl539]

How do these figures look, getting uploads up 10mbps and downloads of 70mpbs with my two panel antennas connected with LMR400. I'm not sure how to tell if I'm using both antennas though so need to spend some time reading manuals.

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!GSTATUS:                                                                                                               
Current Time:  30634            Temperature: 24                                                                         
Reset Counter: 1                Mode:        ONLINE                                                                     
System mode:   LTE              PS state:    Attached                                                                   
LTE band:      B2               LTE bw:      20 MHz                                                                     
LTE Rx chan:   850              LTE Tx chan: 18850                                                                      
LTE SSC1 state:INACTIVE         LTE SSC1 band: B11                                                                      
LTE SSC1 bw  : 10 MHz           LTE SSC1 chan: 5110                                                                     
LTE SSC2 state:NOT ASSIGNED                                                                                             
LTE SSC3 state:NOT ASSIGNED                                                                                             
LTE SSC4 state:NOT ASSIGNED                                                                                             
EMM state:     Registered       Normal Service                                                                          
RRC state:     RRC Connected                                                                                            
IMS reg state: No Srv                                                                                                   
                                                                                                                        
PCC RxM RSSI:  -81              PCC RxM RSRP:  -102                                                                     
PCC RxD RSSI:  -83              PCC RxD RSRP:  -105                                                                     
SCC1 RxM RSSI: -81              SCC1 RxM RSRP: -102                                                                     
SCC1 RxD RSSI: -75              SCC1 RxD RSRP: -95                                                                      
Tx Power:      21               TAC:         871d (34589)                                                               
RSRQ (dB):     -4.5             Cell ID:     0869675c (141125468)                                                       
SINR (dB):     17.2                                                                                                     
                                                                                                                        
                                                                                                                        
OK

[terryjett]

Have two browser tabs/windows open, one on your router debug (or where you got the above results), one on speedtest.net and start the test. Soon as you see the download test on speedtest.net start, quickly enter on router tab:

AT!GSTATUS?

Then post the results.

This will show better results.

The results you posted show CA using bands 2 and 11.