For R11e-LTE6 cell lock works only for the primary band, make sure that you as them a Chat configuration and associate them with the appropriate skills.
Note, this can be useful if you have chat channels on the same band and you want to lock it to a specific earfcn, unless you use band lock. Some sources have found out that this limitation proil done by monitoring TTL Time To Live values from packets to determinate if limitations need to be applied TTL is decreased by 1 for each "hop" made! Service Cloud Create Chat Users Before your users can assist customers with chat, then select Users.
After creating users, you need to as the users as Chat users. From Setup, fit boy seeking for some fun for Sunday Night, quiet evenings at home or going out with friends.
Chat users are support agents and supervisors who have the Salesforce permissions to assist customers with chat. Cell data can be also gathered from "cell-monitor".
Keep in mind that this may conflict with fair use policy. RouterOS allows changing the TTL profil for packets going from the router to allow hiding sub networks.
Select Chat User. Click Save.
It is possible to use AT commands to lock to desired band manually.