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Desperate to test MC8355 modem in T420

T400/T410/T420 and T500/T510/T520 Series
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karotlopj
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Location: Yorkshire, England

Desperate to test MC8355 modem in T420

#1 Post by karotlopj » Fri Jun 11, 2021 2:32 pm

I've been asking around in various forums for the last couple of months about how to check the status of the Sierra MC8355 modem in my T420 and no one seems to know. Apparently you can check things using Hayes AT commands in a terminal session but I have had no success in trying this so far.

If anyone has been successful doing this, I'd appreciate some help in doing this.
My ThinkPad Graveyard:
600 * 2, X220, X61 * 2, T61

RealBlackStuff
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Re: Desperate to test MC8355 modem in T420

#2 Post by RealBlackStuff » Sat Jun 12, 2021 12:54 am

Lovely day for a Guinness! (The Real Black Stuff)
Covid-19: Stay safe, so still Mask it or Casket!

karotlopj
Sophomore Member
Posts: 237
Joined: Wed May 18, 2016 7:14 am
Location: Yorkshire, England

Re: Desperate to test MC8355 modem in T420

#3 Post by karotlopj » Sat Jun 12, 2021 3:44 am

I have exchanged numerous emails with Sierra's support team, but they appear to be clueless or totally disinterested in helping.
My ThinkPad Graveyard:
600 * 2, X220, X61 * 2, T61

RealBlackStuff
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Re: Desperate to test MC8355 modem in T420

#4 Post by RealBlackStuff » Sat Jun 12, 2021 4:11 am

Maybe look for a different card, like Ericsson F5521gw?
Lovely day for a Guinness! (The Real Black Stuff)
Covid-19: Stay safe, so still Mask it or Casket!

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