177Provisioning Client User GuideCreating a Routability GroupA routability group is the network topology of the end user's service area. Thegroup consists of the locations that describe the geography that is served and thenetwork topology that connects them. That network has firewalls and NATdevices spread throughout, so some of those locations route clearly to others, andsome do not. Those that can route clearly to each other can be placed in aroutability group. Because they can route clearly (no NAT devices, no firewalls),a portal is not required. Some examination and understanding of the servicenetwork is required to create a routability group.Creating a new collection of routable locationsTo create a collection of routable locations1 Select Media Portal > Add Routability Group.The Create Routability Group page appears.2 Specify a unique Routability Group Name (Optional: select any ForeignDomains) that is intended to be members of this group. The actions performedat this stage are as follows:a Specify a unique Group Name - This string uniquely identifies thiscollection of routable locations. Each Group contains a set of locationsthat can route packets between each other.b Select the Foreign Domains that are to be members of this group. Select asingle Foreign Domain in the list, or Shift+click a continuous range ofForeign Domains from the list, or Ctrl+click multiple separate ForeignDomains from the list.c Specify the Zone ID in the Zone ID field. The Session Manager uses thisfield for processing SIP Lines calls to determine if a Media Portal isrequired for the call.d When a Group Name is specified and the set of Foreign Domainsselected, click Next (or Cancel to abandon the creation request and toreturn to the List Routability Groups page). The Routability Group is nowcreated.A page appears saying that the new Routability Group is added.
