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Pakistan Trip-3G Modem

414 views. 2013-3-29 13:03

I came to Pakistan to resolve 3G modem problem. There was an USB port on our modem and PTCL wanted it to support different kinds of 3G modem. The DSL network wasn’t stable so PTCL wanted to use 3G modem as a backup. When DSL failed, 3G modem would work automatically. When DSL worked, 3G modem would stop working automatically.

We already made the USB port support all ZTE and Huawei modems automatically, but there was a rebooting issue. When our DSL modem rebooted, the 3G modem wouldn’t work at all. We tried to fix that for two days. The software engineer made a lot of software for me to test without making tiny progress. I thought he should think more and does less so that he could work effectively. Thanks to our customer, who was a really cautious guy, he found APN value became (null) automatically. It should be blank. According to this clue, we made a firmware to resolve this issue. Huawei 3G modems were working fine, but ZTE modems had unstable issue.

We’re trying hard to resolve that.

 

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