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Treimo
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Posts: 3
Joined: Wed Jul 20, 2022 10:51 am

Ltap mini LTE kit + telia.ee SIM - no roaming, how to debug?  [SOLVED]

Wed Jul 20, 2022 11:21 am

Hi!

I have Ltap mini LTE kit with external antenna. I use a SIM from telia.ee, roaming allowed by device an by SIM contract. Set works fine until I was in estonia.
In Latvia and Lithuania I can not get registered into operator network.

Do you can suggest from where to start debugging?

Typical LTE log, no matter what I have changed is following:
 108	Jul/18/2022 11:20:10	memory	lte, async	lte1: sent AT E0 V1
109	Jul/18/2022 11:20:10	memory	lte, async	lte1: rcvd OK
110	Jul/18/2022 11:20:10	memory	lte, async	lte1: sent AT+CFUN?
111	Jul/18/2022 11:20:10	memory	lte, async	lte1: rcvd +CFUN: 1
112	Jul/18/2022 11:20:10	memory	lte, async	lte1: sent AT+CFUN=4
113	Jul/18/2022 11:20:11	memory	lte, async, event	lte1: ^SRVST: 0
114	Jul/18/2022 11:20:11	memory	lte, async, raw	lte1: +CREG: 0
115	Jul/18/2022 11:20:11	memory	lte, async, raw	lte1: +CEREG: 0
116	Jul/18/2022 11:20:11	memory	lte, async, event	lte1: +CGEV: ME DETACH
117	Jul/18/2022 11:20:11	memory	lte, async	lte1: rcvd OK
118	Jul/18/2022 11:20:12	memory	lte, async	lte1: sent AT+CFUN?
119	Jul/18/2022 11:20:12	memory	lte, async	lte1: rcvd +CFUN: 4
120	Jul/18/2022 11:20:12	memory	lte, async	lte1: sent AT+CMEE=2
121	Jul/18/2022 11:20:12	memory	lte, async	lte1: rcvd OK
122	Jul/18/2022 11:20:12	memory	lte, async	lte1: sent AT+CREG=2
123	Jul/18/2022 11:20:12	memory	lte, async	lte1: rcvd OK
124	Jul/18/2022 11:20:12	memory	lte, async	lte1: sent AT+CGREG=2
125	Jul/18/2022 11:20:12	memory	lte, async	lte1: rcvd OK
126	Jul/18/2022 11:20:12	memory	lte, async	lte1: sent AT+CEREG=2
127	Jul/18/2022 11:20:12	memory	lte, async	lte1: rcvd OK
128	Jul/18/2022 11:20:12	memory	lte, async	lte1: sent AT+CGEREP=2,0
129	Jul/18/2022 11:20:12	memory	lte, async	lte1: rcvd OK
130	Jul/18/2022 11:20:12	memory	lte, async	lte1: sent AT+CMGF=0
131	Jul/18/2022 11:20:12	memory	lte, async	lte1: rcvd OK
132	Jul/18/2022 11:20:12	memory	lte, async	lte1: sent AT+CNMI=1,1,0,1,0
133	Jul/18/2022 11:20:12	memory	lte, async	lte1: rcvd OK
134	Jul/18/2022 11:20:12	memory	lte, async	lte1: sent AT+EEMOPT=1
135	Jul/18/2022 11:20:12	memory	lte, async	lte1: rcvd OK
136	Jul/18/2022 11:20:12	memory	lte, async	lte1: sent AT*MRD_SN?
137	Jul/18/2022 11:20:12	memory	lte, async	lte1: rcvd *MRD_SN:xxxxxxxx
138	Jul/18/2022 11:20:12	memory	lte, debug	lte1: serial: *MRD_SN:xxxxxxxxx
139	Jul/18/2022 11:20:12	memory	lte, async	lte1: sent AT+CFUN=4
140	Jul/18/2022 11:20:12	memory	lte, async	lte1: rcvd OK
141	Jul/18/2022 11:20:12	memory	lte, async	lte1: sent AT*CGDFLT=0,"IP","Internet",,,,,,,,,,1,0,,,,,,,1
142	Jul/18/2022 11:20:12	memory	lte, async	lte1: rcvd OK
143	Jul/18/2022 11:20:12	memory	lte, async	lte1: sent AT*CGDFAUTH=0,0
144	Jul/18/2022 11:20:12	memory	lte, async	lte1: rcvd OK
145	Jul/18/2022 11:20:12	memory	lte, async	lte1: sent AT+CPIN?
146	Jul/18/2022 11:20:12	memory	lte, async	lte1: rcvd +CPIN: SIM PIN
147	Jul/18/2022 11:20:12	memory	lte, async	lte1: sent AT+CPIN="xxxxx"
148	Jul/18/2022 11:20:13	memory	lte, async	lte1: rcvd OK
149	Jul/18/2022 11:20:13	memory	lte, async	lte1: sent AT+CFUN?
150	Jul/18/2022 11:20:14	memory	lte, async, event	lte1: +CPIN: READY
151	Jul/18/2022 11:20:14	memory	lte, async, event	lte1: ^SIMST: 1
152	Jul/18/2022 11:20:14	memory	lte, async	lte1: rcvd +CFUN: 4
153	Jul/18/2022 11:20:14	memory	lte, async	lte1: sent AT+CMEE=2
154	Jul/18/2022 11:20:14	memory	lte, async	lte1: rcvd OK
155	Jul/18/2022 11:20:14	memory	lte, async	lte1: sent AT+CREG=2
156	Jul/18/2022 11:20:14	memory	lte, async	lte1: rcvd OK
157	Jul/18/2022 11:20:14	memory	lte, async	lte1: sent AT+CGREG=2
158	Jul/18/2022 11:20:14	memory	lte, async	lte1: rcvd OK
159	Jul/18/2022 11:20:14	memory	lte, async	lte1: sent AT+CEREG=2
160	Jul/18/2022 11:20:14	memory	lte, async	lte1: rcvd OK
161	Jul/18/2022 11:20:14	memory	lte, async	lte1: sent AT+CGEREP=2,0
162	Jul/18/2022 11:20:14	memory	lte, async	lte1: rcvd OK
163	Jul/18/2022 11:20:14	memory	lte, async	lte1: sent AT+CMGF=0
164	Jul/18/2022 11:20:14	memory	lte, async	lte1: rcvd OK
165	Jul/18/2022 11:20:14	memory	lte, async	lte1: sent AT+CNMI=1,1,0,1,0
166	Jul/18/2022 11:20:14	memory	lte, async	lte1: rcvd OK
167	Jul/18/2022 11:20:14	memory	lte, async	lte1: sent AT+EEMOPT=1
168	Jul/18/2022 11:20:14	memory	lte, async	lte1: rcvd OK
169	Jul/18/2022 11:20:14	memory	lte, async	lte1: sent AT*MRD_SN?
170	Jul/18/2022 11:20:14	memory	lte, async	lte1: rcvd *MRD_SN:xxxxxxx
171	Jul/18/2022 11:20:14	memory	lte, debug	lte1: serial: *MRD_SN:xxxxxxxx
172	Jul/18/2022 11:20:14	memory	lte, async	lte1: sent AT+CFUN=4
173	Jul/18/2022 11:20:14	memory	lte, async	lte1: rcvd OK
174	Jul/18/2022 11:20:14	memory	lte, async	lte1: sent AT*CGDFLT=0,"IP","Internet",,,,,,,,,,1,0,,,,,,,1
175	Jul/18/2022 11:20:14	memory	lte, async	lte1: rcvd OK
176	Jul/18/2022 11:20:14	memory	lte, async	lte1: sent AT*CGDFAUTH=0,0
177	Jul/18/2022 11:20:14	memory	lte, async	lte1: rcvd OK
178	Jul/18/2022 11:20:14	memory	lte, async	lte1: sent AT+CPIN?
179	Jul/18/2022 11:20:14	memory	lte, async	lte1: rcvd +CPIN: READY
180	Jul/18/2022 11:20:15	memory	lte, async, event	lte1: +MMSG: 2, 0
181	Jul/18/2022 11:20:15	memory	lte, async, event	lte1: +MMSG: 3, 1
182	Jul/18/2022 11:20:15	memory	lte, async, event	lte1: ^SMMEMFULL: SM
183	Jul/18/2022 11:20:15	memory	lte, async, event	lte1: +MPBK: 1
184	Jul/18/2022 11:20:15	memory	lte, async, event	lte1: +MMSG: 0, 1
185	Jul/18/2022 11:20:15	memory	lte, async, event	lte1: ^SMMEMFULL: SM
186	Jul/18/2022 11:20:18	memory	lte, async	lte1: sent AT+CPMS="SM","SM","SM"
187	Jul/18/2022 11:20:18	memory	lte, async	lte1: rcvd +CPMS: 20,20,20,20,0,0
188	Jul/18/2022 11:20:18	memory	lte, async	lte1: sent AT+CFUN?
189	Jul/18/2022 11:20:18	memory	lte, async, event	lte1: +MMSG: 0, 1
190	Jul/18/2022 11:20:18	memory	lte, async, event	lte1: ^SMMEMFULL: SM
191	Jul/18/2022 11:20:18	memory	lte, async	lte1: rcvd +CFUN: 4
192	Jul/18/2022 11:20:18	memory	lte, async	lte1: sent AT+ICCID?
193	Jul/18/2022 11:20:18	memory	lte, async	lte1: rcvd +ICCID: xxxxxxxxxx
194	Jul/18/2022 11:20:18	memory	lte, async	lte1: sent AT+CNUM
195	Jul/18/2022 11:20:18	memory	lte, async	lte1: rcvd +CME ERROR: 100
196	Jul/18/2022 11:20:18	memory	lte, async	lte1: sent AT+CIMI
197	Jul/18/2022 11:20:19	memory	lte, async	lte1: rcvd xxxxxxxxxxxxxc
198	Jul/18/2022 11:20:19	memory	lte, async	lte1: sent AT+CPIN?
199	Jul/18/2022 11:20:19	memory	lte, async	lte1: rcvd +CPIN: READY
200	Jul/18/2022 11:20:19	memory	lte, async	lte1: sent AT*BAND=15,78,147,160,524487,1,2,0
201	Jul/18/2022 11:20:19	memory	lte, async	lte1: rcvd OK
202	Jul/18/2022 11:20:20	memory	lte, async	lte1: sent AT+COPS=0
203	Jul/18/2022 11:20:20	memory	lte, async	lte1: rcvd OK
204	Jul/18/2022 11:20:20	memory	lte, async	lte1: sent AT+CFUN=1
205	Jul/18/2022 11:20:20	memory	lte, async, raw	lte1: +CREG: 2
206	Jul/18/2022 11:20:20	memory	lte, async, raw	lte1: +CEREG: 2
207	Jul/18/2022 11:20:20	memory	lte, async	lte1: rcvd OK
208	Jul/18/2022 11:20:20	memory	lte, async	lte1: sent AT+COPS=3,0
209	Jul/18/2022 11:20:20	memory	lte, async	lte1: rcvd OK
210	Jul/18/2022 11:20:20	memory	lte, debug	lte1: config ok
211	Jul/18/2022 11:20:20	memory	lte, async, raw	lte1: sent AT+CFUN?
212	Jul/18/2022 11:20:20	memory	lte, async, raw	lte1: rcvd +CFUN: 1
213	Jul/18/2022 11:20:20	memory	lte, async, raw	lte1: sent AT+CSQ
214	Jul/18/2022 11:20:20	memory	lte, async, raw	lte1: rcvd +CSQ: 99,99
215	Jul/18/2022 11:20:23	memory	lte, async, raw	lte1: sent AT+CSQ
216	Jul/18/2022 11:20:23	memory	lte, async, raw	lte1: rcvd +CSQ: 99,99
217	Jul/18/2022 11:20:26	memory	lte, async, raw	lte1: sent AT+CSQ
218	Jul/18/2022 11:20:26	memory	lte, async, raw	lte1: rcvd +CSQ: 99,99
219	Jul/18/2022 11:20:29	memory	lte, async, raw	lte1: sent AT+CSQ
220	Jul/18/2022 11:20:29	memory	lte, async, raw	lte1: rcvd +CSQ: 99,99
221	Jul/18/2022 11:20:32	memory	lte, async, raw	lte1: sent AT+CSQ
222	Jul/18/2022 11:20:32	memory	lte, async, raw	lte1: rcvd +CSQ: 99,99
223	Jul/18/2022 11:20:35	memory	lte, async, raw	lte1: sent AT+CSQ
224	Jul/18/2022 11:20:35	memory	lte, async, raw	lte1: rcvd +CSQ: 99,99
225	Jul/18/2022 11:20:38	memory	lte, async, raw	lte1: sent AT+CSQ
226	Jul/18/2022 11:20:38	memory	lte, async, raw	lte1: rcvd +CSQ: 99,99
227	Jul/18/2022 11:20:41	memory	lte, async, raw	lte1: sent AT+CSQ
228	Jul/18/2022 11:20:41	memory	lte, async, raw	lte1: rcvd +CSQ: 99,99
229	Jul/18/2022 11:20:44	memory	lte, async, raw	lte1: sent AT+CSQ
230	Jul/18/2022 11:20:44	memory	lte, async, raw	lte1: rcvd +CSQ: 99,99
231	Jul/18/2022 11:20:47	memory	lte, async, raw	lte1: sent AT+CSQ
232	Jul/18/2022 11:20:47	memory	lte, async, raw	lte1: rcvd +CSQ: 99,99
234	Jul/18/2022 11:20:50	memory	lte, async, raw	lte1: sent AT+CSQ
235	Jul/18/2022 11:20:50	memory	lte, async, raw	lte1: rcvd +CSQ: 99,99
236	Jul/18/2022 11:20:53	memory	lte, async, raw	lte1: sent AT+CSQ
237	Jul/18/2022 11:20:53	memory	lte, async, raw	lte1: rcvd +CSQ: 99,99
238	Jul/18/2022 11:20:56	memory	lte, async, raw	lte1: sent AT+CSQ
239	Jul/18/2022 11:20:56	memory	lte, async, raw	lte1: rcvd +CSQ: 99,99
240	Jul/18/2022 11:20:59	memory	lte, async, raw	lte1: sent AT+CSQ
241	Jul/18/2022 11:20:59	memory	lte, async, raw	lte1: rcvd +CSQ: 99,99
242	Jul/18/2022 11:21:02	memory	lte, async, raw	lte1: sent AT+CSQ
243	Jul/18/2022 11:21:02	memory	lte, async, raw	lte1: rcvd +CSQ: 99,99
244	Jul/18/2022 11:21:05	memory	lte, async, raw	lte1: sent AT+CSQ
245	Jul/18/2022 11:21:05	memory	lte, async, raw	lte1: rcvd +CSQ: 99,99
246	Jul/18/2022 11:21:08	memory	lte, async, raw	lte1: sent AT+CSQ
247	Jul/18/2022 11:21:08	memory	lte, async, raw	lte1: rcvd +CSQ: 99,99
249	Jul/18/2022 11:21:11	memory	lte, async, raw	lte1: sent AT+CSQ
250	Jul/18/2022 11:21:11	memory	lte, async, raw	lte1: rcvd +CSQ: 99,99
251	Jul/18/2022 11:21:14	memory	lte, async, raw	lte1: sent AT+CSQ
252	Jul/18/2022 11:21:14	memory	lte, async, raw	lte1: rcvd +CSQ: 99,99
253	Jul/18/2022 11:21:17	memory	lte, async, raw	lte1: sent AT+CSQ
254	Jul/18/2022 11:21:17	memory	lte, async, raw	lte1: rcvd +CSQ: 99,99
255	Jul/18/2022 11:21:20	memory	lte, async, raw	lte1: sent AT+CSQ
256	Jul/18/2022 11:21:20	memory	lte, async, raw	lte1: rcvd +CSQ: 99,99
257	Jul/18/2022 11:21:23	memory	lte, async, raw	lte1: sent AT+CSQ
258	Jul/18/2022 11:21:23	memory	lte, async, raw	lte1: rcvd +CSQ: 99,99
259	Jul/18/2022 11:21:26	memory	lte, async, raw	lte1: sent AT+CSQ
260	Jul/18/2022 11:21:26	memory	lte, async, raw	lte1: rcvd +CSQ: 99,99
261	Jul/18/2022 11:21:29	memory	lte, async, raw	lte1: sent AT+CSQ
Thanks for any support or idea
 
Treimo
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Posts: 3
Joined: Wed Jul 20, 2022 10:51 am

Re: Ltap mini LTE kit + telia.ee SIM - no roaming, how to debug?

Fri Jul 22, 2022 11:16 am

Now in Latvia I can registered to operator network - to be disconnected immediately. Only new LTE log error is:

“+ CME Error: 100”

Which means “unknown” - according the “3GPP TS 27.007 V13.4.0 (2016-03)”
 
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normis
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Joined: Fri May 28, 2004 11:04 am
Location: Riga, Latvia

Re: Ltap mini LTE kit + telia.ee SIM - no roaming, how to debug?

Fri Jul 22, 2022 1:04 pm

Most likely the APN is incorrectly specified. Usually wrong APN will work in home network, but not while roaming.
Try internet.tele2.ee or mobileinternet.tele2.ee or ask the operator
 
Treimo
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Re: Ltap mini LTE kit + telia.ee SIM - no roaming, how to debug?

Fri Jul 22, 2022 2:22 pm

Than You

It solved the problem. Correct APN was “internet.emt.ee”.

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