/mcpDial-Peer States Dial-peers can be in one of two Operational states. Up 1. Down 2. For a dial-peer to be in a valid operational state, and eligible for use with call routing, it needs to be in the UP state. For outbound VOIP dial-peers, this means there can be a valid outbound matching mechanisms as well as a valid session target to route the call towards. For outbound POTS dial-peers, a valid outbound matching mechanism as well as a valid voice-port can be configured. With inbound dial-peers only, a valid inbound matching mechanisms must be configured. The busyout state is seen when a dial-peer is configured with a keepalive mechanisms and the remote target has failed the parameters of that keepalive mechanism. The gateway then moves the dial-peer into a busyout state so it is no longer used for call routing decisions, and when the keepalive mechanism is fulfilled again, the gateway puts the dial-peer back into an up state. If a dial-peer is selected as an outbound dial-peer, and this dial-peer is in a busyout state, the gateway fails the call with a cause code 188.