GWREG advertises the availability of _______ Gateway availability –MGC advertises its GWs availability –Smart GWs availability known directly Route availability (+1212555) –Are all MGC routes for +? Why express preference? –Also other address families (CIC, NP) Trunk group availability –Trunks associated with physical interfaces –CSI states (blocked locally/remotely, idle, etc) –Availability of routes predicated on trunk groups But often not on a single GW
Qualities of TGs Static Attributes Directionality Protocol used over trunk Reachable carrier(s) Reachable switch (PC/CLLI/LRN) Telephone number prefixes Total Capacity –Actually static? Dynamic Attributes Blocking state Current capacity
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