Protocol The attached Protocol shall be an integral part of this Agreement.
Signaling protocol The Parties will interconnect their networks using SS7 signaling where Technically Feasible and available as defined in GR 905 Telcordia Standards including ISDN User Part (ISUP) for trunk signaling and TCAP for CCS-based features in the Interconnection of their networks. All Network Operations Forum (NOF) adopted standards shall be adhered to. Where available, CenturyLink signaling services to link its Signaling Transfer Points (STPs) for CLEC switches which connect to CenturyLink’s STPs via “A” links or for CLEC’s STPs to connect to CenturyLink’s STPs via “D” links which are dedicated to the transport of signaling for local Interconnection, may be ordered from the CenturyLink Tariff.