EM8695: AT!ENTERCND password / access to protected commands (custom band selection for NR-RedCap NSA verification)

1

Hello!

I’m testing a EM8695 (NR-RedCap) module and need access to the protected AT command set.

In the EM8695 AT Command Reference, it states that AT!ENTERCND enables access to additional/lower-level commands (including commands needed for custom band selection / band masks). Our goal is to set a custom band selection to steer the modem toward an NR-RedCap NSA-capable serving cell, so we can verify 5G NSA operation with our current operator.

We purchased the device through a third-party distributor and did not receive any password or provisioning information. We’re therefore unsure whether a default password exists for this unit, or whether the password is provisioned per-device during manufacturing.

Could you please advise:

  1. Whether the EM8695 has a universal default AT!ENTERCND password, or if it is unique per device/build.

  2. If it is unique, what is the correct process to retrieve or reset it for our module (e.g., what identifiers you need from us such as IMEI/serial/firmware/PRI).

  3. An improved approach for testing NR-RedCap NSA if our current one seems sub-optimal.

Thanks in advance:)

2

have you tried AT!ENTERCND=“A710”

3

Yes, the documentation says that after running AT!ENTERCND=<password> correctly AT!ENTERCND? will print the password back. This does not happen with “A710”. After trying to create a custom band it returns ok but does not change to this new band, and it does not show up as a possibility.

at!entercnd=“A710”
OK
AT!ENTERCND?
OK

at!band?
Index, Name L Band Mask L Band Mask 2 NRSA Band Mask NRSA Band Mask 2
00, All bands 000087E22B0F38DF 0000020000000062 000081A02B0A38D7 0000000000007062

at!band=01,“test”,1,0,000081A02B0A38D7,7062
OK

at!band?
Index, Name L Band Mask L Band Mask 2 NRSA Band Mask NRSA Band Mask 2
00, All bands 000087E22B0F38DF 0000020000000062 000081A02B0A38D7 0000000000007062

at!band=?
Index, Name L Band Mask 1 L Band Mask 2 NRSA Band Mask 1 NRSA Band Mask 2
00, All bands 000087E22B0F38DF 0000020000000062 000081A02B0A38D7 0000000000007062
06, Europe 00000000000800C5 0000000000000000 0000000000000000 0000000000000000
07, North America 000001000301385A 0000000000000000 0000000000000000 0000000000000000
09, LTE ALL 000087E22B0F38DF 0000000000000062 0000000000000000 0000000000000000
0C, NR5G ALL 0000000000000000 0000000000000000 000081A02B0A38D7 0000000000007062

4

I don’t see problem:


at!band=13,"CUSTOMER",1,0,000081A02B0A38D7,7062
OK
at!band?
Index, Name                    L Band Mask      L Band Mask 2    NRSA Band Mask                                                                                                             NRSA Band Mask 2
00, All bands                  000087E22B0F38DF 0000020000000062 000081A02B0A38D                                                                                                          7 0000000000007062


OK
at!band=?
Index, Name                       L Band Mask 1    L Band Mask 2    NRSA Band Ma                                                                                                          sk 1 NRSA Band Mask 2
00, All bands                     000087E22B0F38DF 0000020000000062 000081A02B0A                                                                                                          38D7 0000000000007062
06, Europe                        00000000000800C5 0000000000000000 000000000000                                                                                                          0000 0000000000000000
07, North America                 000001000301385A 0000000000000000 000000000000                                                                                                          0000 0000000000000000
09, LTE ALL                       000087E22B0F38DF 0000000000000062 000000000000                                                                                                          0000 0000000000000000
0C, NR5G ALL                      0000000000000000 0000000000000000 000081A02B0A                                                                                                          38D7 0000000000007062
13, CUSTOMER                      0000000000000001 0000000000000000 000081A02B0A                                                                                                          38D7 0000000000007062


                                                                                                                                                                                               0000000000004000 - n79
                                                                                                                                                                                               0000000000002000 - n78
                                                                                                                                                                                               0000000000001000 - n77
                                                                                                                                                                                               0000000000000040 - n71
                                                                                                                                                                                               0000000000000020 - n70
                                                                                                                                                                                               0000000000000002 - n66
                                                                    000080000000                                                                                                          0000 - n48
                                                                    000001000000                                                                                                          0000 - n41
                                                                    000000800000                                                                                                          0000 - n40
                                                                    000000200000                                                                                                          0000 - n38
                                                                    000000002000                                                                                                          0000 - n30
                                                                    000000000800                                                                                                          0000 - n28
                                                                    000000000200                                                                                                          0000 - n26
                                                                    000000000100                                                                                                          0000 - n25
                                                                    000000000008                                                                                                          0000 - n20
                                                                    000000000002                                                                                                          0000 - n18
                                                                    000000000000                                                                                                          2000 - n14
                                                                    000000000000                                                                                                          1000 - n13
                                                                    000000000000                                                                                                          0800 - n12
                                                                    000000000000                                                                                                          0080 -  n8
                                                                    000000000000                                                                                                          0040 -  n7
                                                                    000000000000                                                                                                          0010 -  n5
                                                                    000000000000                                                                                                          0004 -  n3
                                                                    000000000000                                                                                                          0002 -  n2
                                                                    000000000000                                                                                                          0001 -  n1
                                                   0000020000000000 -B106
                                                   0000000000000040 - B71
                                                   0000000000000020 - B70
                                                   0000000000000002 - B66
                                  0000800000000000 - B48
                                  0000040000000000 - B43
                                  0000020000000000 - B42
                                  0000010000000000 - B41
                                  0000008000000000 - B40
                                  0000004000000000 - B39
                                  0000002000000000 - B38
                                  0000000200000000 - B34
                                  0000000020000000 - B30
                                  0000000008000000 - B28
                                  0000000002000000 - B26
                                  0000000001000000 - B25
                                  0000000000080000 - B20
                                  0000000000040000 - B19
                                  0000000000020000 - B18
                                  0000000000010000 - B17
                                  0000000000002000 - B14
                                  0000000000001000 - B13
                                  0000000000000800 - B12
                                  0000000000000080 -  B8
                                  0000000000000040 -  B7
                                  0000000000000010 -  B5
                                  0000000000000008 -  B4
                                  0000000000000004 -  B3
                                  0000000000000002 -  B2
                                  0000000000000001 -  B1


OK
at!band?
Index, Name                    L Band Mask      L Band Mask 2    NRSA Band Mask   NRSA Band Mask 2
00, All bands                  000087E22B0F38DF 0000020000000062 000081A02B0A38D7 0000000000007062


OK