Hi! Yesterday we found such a thing on the network, both subscribers are on LTE, but data transmission is turned off, both have data transmission turned off. I make a call, we are thrown into the network below, I go to 3G, the second subscriber in 2g. We end the call, after the call I immediately return to LTE, the second subscriber, who was thrown in 2g, remains in it for 15-16 seconds. Can you suggest something about this? We did a test with the radio frequency, I see that after the end of the call, BTS gives LTE frequencies, that is, there is a fast return, but the phone does not go into LTE, it freezes somewhere.
Vendor Huawe LTE, BSC, RNC.