Intra-Service Provider Port
An intra-service provider port allows an SP to retain unavailable TNs in contaminated thousands-blocks that are being donated to an industry inventory pool. Specifically, numbers assigned to customers from donated thousands-blocks that are contaminated will be ported back to the donating carrier to enable it to continue to provide service to those customers. An intra-service provider port can also be used to move a TN(s) from one switch serving a rate center to another switch serving the same rate center where LRN-LNP technology is in use.