fer Point (STP) An STP is a point where a message received on one signaling link is transferred to another link; Message Label Each message contains a label. In the standard label, the portion that is used for routing is called the routing label. The routing label includes: Destination and originating points of the message. A code used for load sharing, which may be the least significant part of a label component that identifies a user transaction at layer 4. The standard label assumes that each signaling point in a signaling network is assigned an identification code, according to a code plan established for the purpose of labeling. CCITT SIGNALING SYSTEM NO. 7 Message Routing Message routing is the process of selecting the signaling link to be used for each signaling message. Message routing is based on analysis of the rout- ing label of the message in combination with predetermined routing data at a particular signaling point. Message Distribution Message distribution is the process that determines to which user part a message is to be delivered. The choice is made by analysis of the service indicator. Message Discrimination Message discrimination is the process that determines, on receipt of a message at a signaling point, whether or not the point is the destination point of that message. This decision is based on analysis of the destination code of the routing label in the message. If the signaling point is the destination, the message is delivered to the message destination function. If not, the message is delivered to the routing function for further transfer on a signaling link. 14.4.1 Signaling Network Management Three signaling network management functional blocks are shown in Figure 14.3. These are signaling traffic management, signaling link management, and signaling route management. 14.4.1.1 Signaling Traffic Management. The signaling traffic management func- tions are: 1. To control message routing. This includes modification of message routing to pre- serve, when required, accessibility of all des