CEMODE

RE: CEMODE

Håkon Alseth — Tue, 19 Apr 2022 08:45:37 GMT

Hi,

Sorry for the late reply.

[quote user="jk1"]

I'm not really familiar with what circuit switching and packet switching means, which was the main reason for my question.

I'm using LTE-M1 and currently all our devices in the field set CEMODE=0. Is there any negative or advantage to this? I'm not using SMS at all.

Is there a case where CEMODE=0 wouldn't work on a network but CEMODE=2 would?

[/quote]

As mentioned, CS is commonly not used on LTE, but can be used for certain features like SMS in some networks.

For more details on what your network uses, you'll have to ask your local network provider.

Kind regards,

Håkon

jk1 — Fri, 08 Apr 2022 13:49:08 GMT

I'm not really familiar with what circuit switching and packet switching means, which was the main reason for my question.

I'm using LTE-M1 and currently all our devices in the field set CEMODE=0. Is there any negative or advantage to this? I'm not using SMS at all.

Is there a case where CEMODE=0 wouldn't work on a network but CEMODE=2 would?

Thanks!

Håkon Alseth — Fri, 08 Apr 2022 12:46:02 GMT

Hi,

[quote user=""]In what cases should I use AT+CEMODE=0 vs AT+CEMODE=2? [/quote]

This sets the switching mode on LTE attach, either packet switching or combined attach (circuit switch + packet switch)

For LTE, packet switching is performed, but some networks use circuit switching for services such as SMS.

Our devices sets CEMODE=2 by default for LTE-M1, and CEMODE=0 for NB1.

Kind regards,

Håkon