Explanation:
1. Extension 1011 of PBX-1 dials the TIE line access number "7", PBX code "952", Idle Line Access
number of PBX
-2 "9", and telephone number "211-4567"; or dials the Trunk Group Access number of
PBX-1 "8", trunk group number "02" (TRG2), PBX code "952", Idle Line Access number of PBX-2 "9",
and telephone number "211-4567".
2. The call is connected to the outside party "211-4567" through PBX-2 which has PBX code "952".
378 Feature Guide
4.3.1 TIE Line Service