VCPP data-bundle: Downlink "blocked" after 10 min.
Hi, I'm also experiencing a similar problem, that ONLY occurs when I use a prepaid VC SIM in my E220:
When the connection remains inactive for about 10 minutes, or more, the the downlink seems to get "blocked", and stays "blocked" until you disconnect and re-connect. However, the uplink still continues to work.
I reported the problem to VC TechSupp, but they assured me that everything was "normal" at their end. One solution, that seems to work, is to use a "keep alive" program that sends out a "ping" every few minutes. I currently leave MS Outlook running, with auto mail downloads occuring at 5-minute intervals, to achieve continuity.
Yes, I have upgraded the firmware, and have updated the desktop software, etc. Have also done a SIM-swop, and tried yet a different prepaid SIM, but have eventually proved that the problem does NOT occur when one uses a monthly contract account (i.e. non-prepaid/top-up) SIM.
Unfortunately, the connection often gets confused for other reasons; like when automatic switchovers between HSDPA/3G/GPRS occur ("3G only/3G preferred" etc), or when signal strength falls very low. This has also led to the modem staying connected, but locked-up, and needing to be reset by unplugging the USB cable to electrically disconnect it. But these two issues are very different.
Has anyone had a similar problem with their data transfer using an E220 and a VC pre-paid contract and data-bundle?
P