Communication systems, communication devices, and related methods for routing calls between communication devices having users with different abilities

A group routing server for assisting an organization to route calls to communication devices and an assistive communication service according to users having different language abilities, the group routing server comprising:

• memory having stored therein routing rules for an organization and an ID database with individual unique IDs for a defined set of communication devices managed by the group routing server for the organization;
• and
• a processor operably coupled with the memory, the processor configured to:
• receive an incoming call from a far-end communication device initiating the call to a group unique ID associated with the organization or to one of the individual unique IDs;
• determine a destination communication device from among the defined set of communication devices of the organization to which the incoming call is to be routed by the group routing server of the organization;
• determine language abilities of a far-end user associated with a far-end communication device initiating the incoming call based, at least in part, on detecting whether the incoming call is received from an Internet-based Telecommunications Relay Service (ITRS) network or a public switched telephone network (PSTN);
• determine whether an assistive communication service is needed for providing interpretive services based, at least in part, on differing language abilities between the far-end user and a near-end user associated with the destination communication device, the differing language abilities between the far-end user and the near-end user based on sign language;
• route the incoming call to the assistive communication service according to the routing rules for the organization if the assistive communication service is determined to be needed;
• and
• route the incoming call directly to the destination communication device according to the routing rules for the organization if the assistive communication service is not determined to be needed.