Group Number. A number that identifies the trunk group associated with the displayed data.

Group Size. Number of trunks in the trunk group.

Group Direction. Incoming (inc), outgoing (out), or two-way (two).

Service Type. The administered Service Type for the trunk group. Valid entries are accunet, i800, inwats, lds, mega800, megacom, multiquest, operator, other, outwats-bnd, public-ntwrk, sdn, sub-operator, and wats-max-bnd.

Total wideband call usage (in CCS) for all trunks in the trunk group. Represents the total time the trunks are busy processing wideband calls.

Maintenance Usage. The total usage of trunks in this trunk group for Maintenance Busy or any other non-call situation where trunks are not available to carry a call.

Total Seizures. The number of wideband call attempts. This measurement includes completed calls, false starts, don’t answers, and busies.

Incoming Seizures. The number of wideband incoming call attempts. This measurement includes completed calls, false starts, don’t answers, and busies. The number of Outgoing Seizures can be calculated as follows:

Tandem Seizures. The number of trunk-to-trunk wideband call seizures. This count is incremented on the outgoing-trunk side of the connection.

Group Overflow. The number of outgoing wideband calls attempted when the remaining trunk group capacity is insufficient to accommodate the call or the trunk group’s remaining bandwidth is in the wrong configuration. This measurement does not include unauthorized calls denied service on the trunk group (due to restrictions).

Out of Service. The number of trunks in the trunk group out of service during the measurement hour.

Percent All Trunks Busy. The percentage of time during the measurement interval all trunks in the group are unavailable to carry a new call (All Trunks Busy).

Percent Outgoing Blocking. The percent of the outgoing wideband call seizures, including tandem wideband call seizures, offered to a trunk group that are not carried on that trunk group. The value is calculated as follows:

% Out Blk = {Grp Ovfl / [Total Seize - Inc Seize + Grp Ovfl> x 100