This resource is used to configure a base-station in a (mini-)multicell DECT Network, where another Gigaset N670/N870 is already operating as a DECT Manager.
To make the link with this manager, the MAC field must contain its MAC address. The MAC of the base station itself is given in the resource parameters (BS mac).

Internal doc about Gigaset devices is here
You can find detailed stuff in Gigaset's wiki here

NOTE : From SDG6 version 2.0.0, we get rid of the BS mac parameter and use instead the new 'Line ID' field. Thus a base station resource is uniquely identified by the pair (MAC=MAC of DM, Line ID=MAC of BS).

Resource configuration parameters

• [ Line ID ] : from 2.0.0, used instead of BS mac, same meaning.

• BS mac : the MAC address of the base station the resource stands for (lower cased)
• Cluster : the cluster ID the base station will be included in. A Cluster comprises a number of base stations of a DECT manager that synchronise with each other to enable handovers, roaming and load balancing (see here)
• Sync level : the level in the cluster synchronization tree (see sync planning, levels and in LAN)
• LAN master : whether this base station will be the LAN master regarding synchronization
• BS name : the name used to present the base station in the DECT Manager interface