Sierra Wireless MC7455 | EM7455 -- AT! Command Guide

[JimHelms]

I borrowed this list of bandmasks from jhend at the ROOter forum:

lte_bands

Code: Select all

B1      0000000000000001
B2      0000000000000002
B3      0000000000000004
B4      0000000000000008
B5      0000000000000010
B6      0000000000000020
B7      0000000000000040
B8      0000000000000080
B9      0000000000000100
B10     0000000000000200
B11     0000000000000400
B12     0000000000000800
B13     0000000000001000
B14     0000000000002000
B17     0000000000010000
B18     0000000000020000
B19     0000000000040000
B20     0000000000080000
B21     0000000000100000
B22     0000000000200000
B23     0000000000400000
B24     0000000000800000
B25     0000000001000000
B26     0000000002000000
B27     0000000004000000
B28     0000000008000000
B29     0000000010000000
B30     0000000020000000
B31     0000000040000000
B32     0000000080000000
B33     0000000100000000
B34     0000000200000000
B35     0000000400000000
B36     0000000800000000
B37     0000001000000000
B38     0000002000000000
B39     0000004000000000
B40     0000008000000000
B41     0000010000000000
B42     0000020000000000
B43     0000040000000000
B44     0000080000000000
B45     0000100000000000
B46     0000200000000000
B47     0000400000000000
B48     0000800000000000
B49     0001000000000000
B50     0002000000000000
B51     0004000000000000
B52     0008000000000000
B64     8000000000000000
B65     0000000000000000        0000000000000001
B66     0000000000000000        0000000000000002
B67     0000000000000000        0000000000000004
B68     0000000000000000        0000000000000008
B69     0000000000000000        0000000000000010
B70     0000000000000000        0000000000000020
B71     0000000000000000        0000000000000040
B72     0000000000000000        0000000000000080
B73     0000000000000000        0000000000000100
B74     0000000000000000        0000000000000200
B75     0000000000000000        0000000000000400
B76     0000000000000000        0000000000000800 

[Jflex113]

Here are the bands that I use on the EM7565 to lock and get CA. I've gotten CAx3 on T-Mobile and I only got it by locking bands. On an MC7455 you can only do CAx2 so this is not always the case.

Keep in mind that some of these band are only on the MC7455 and some of them are only on the EM7565

When using these commands make sure you change the at!band=** index to the numbers that you are not using ex. at!band=0E

Commands used for T-Mobile

Code: Select all

at!entercnd="A710"
at!band=10,"B2",0,0000000000000002
at!band=11,"B4",0,0000000000000008
at!band=12,"B12",0,0000000000000800
at!band=13,"B66",0,0,0000000000000002
at!band=0A,"T-Mobile (All)",0,000000000000080A,0000000000000002

Commands used for Verizon

Code: Select all

at!band=10,"B1",0,0000000000000001
at!band=11,"B2",0,0000000000000002
at!band=12,"B4",0,0000000000000008
at!band=13,"B5",0,0000000000000010
at!band=14,"B13",0,0000000000001000
at!band=0B,"VZW (All)",0,000000000000101B

Commands used for Sprint

Code: Select all

at!entercnd="A710"
at!band=10,"B25",0,0000000001000000
at!band=11,"B26",0,0000000002000000
at!band=12,"B41",0,0000010000000000
at!band=0C,"Sprint (All)",0,0000010002000000

Commands used for AT&T

Code: Select all

at!entercnd="A710"
at!band=10,"B2",0,0000000000000002
at!band=11,"B3",0,0000000000000004
at!band=12,"B4",0,0000000000000008
at!band=13,"B5",0,0000000000000010
at!band=14,"B12",0,0000000000000800
at!band=0A,"B14",0,0000000000002000
at!band=0B,"B17",0,0000000000010000
at!band=0C,"B29",0,0000000010000000
at!band=0D,"B30",0,0000000020000000
at!band=0E,"ATT (All)",0,000000003001281E

[saw2645]

Thanks for this info!
Can someone confirm that I have this right for using band 2 and band 4 on AT&T.
AT!BAND=03,”LTE B2+B4”,0,2,8

Thanks for any help!

[saw2645]

Thanks for this info!
Can someone confirm that I have this right for using band 2 and band 4 on AT&T.
AT!BAND=03,”LTE B2+B4”,0,2,8

Thanks for any help!

I think I got it, it should be, AT!BAND=03,”LTE B2+B4”,0,A, not positive, but did take this one.

Again thanks for this information!

[oma215]

HI I have the WE826-T with the EM7455 with AT&T and the LTE CA is INACTIVE. what can I do to activate it.

[JimHelms]

HI I have the WE826-T with the EM7455 with AT&T and the LTE CA is INACTIVE. what can I do to activate it.

When a router is idle (i.e., not pulling data), the CA will always show as Inactive. Running a speed test on one device (i.e., cell phone) while watching the results of AT!GSTATUS will generally make CA ACTIVE.

This is assuming your signals are adequate to receive the secondary required for CA.

[dchou4u]

Hi, thanks for the excellent tutorial. I find it very very helpful.

What is the AT command to perform firmware update to the EM7455 modem? I only can find the AT command to reset and put the modem in hold mode, but I cannot find any AT command to actually download the firmware to the modem.

Our EM7455 modem is connected to our own ARM Linux board running Linux 3.6.5. What I envision is that I would store the modem firmware images somewhere on my Linux filesystem, and I need an AT command to download these images to the modem.

Thanks