I conclude :
1. The lost connection of internet has no relation with TBF resume/suspend.
2. It doesn’t matter if we set MAX_PDCH > 40% eventhough I just have 1 E1. It just a matter of throughput. If we allocate many PDCHs, and set the MAX MCS = 9, perhaps, with many subscribers, the probability to have MCS-9 is very low. The throughput is not only depend on PDCH allocated in BTS, but also the capacity of GCH in Abis. 🙂 ==> as long as no bottle neck in Ater/GPU.
3. Thanks, your answer really clear out my confuse. 🙂
Thanks A lot everybody. 🙂 This forum is very fascinating!