| Peak hour | Feature |
|---|
| Date | Hr | no.
| used | description |
|---|
| 2005/09 12 | 08 | 000 | 178 | Auto dial |
| 2005/09 19 | 10 | 001 | 157 | Call forward |
| 2005/09 16 | 13 | 002 | 47 | Call pickup |
| 2005/09 19 | 11 | 003 | 563 | Call transfer |
| 2005/09 09 | 08 | 004 | 1 | Call waiting |
| 2005/09 01 | 09 | 005 | 0 | 3-party conference |
| 2005/09 07 | 14 | 006 | 16 | 6-party conference |
| 2005/09 01 | 09 | 007 | 0 | Manual signaling |
| 2005/09 01 | 09 | 008 | 0 | Override |
| 2005/09 01 | 09 | 009 | 0 | Privacy release |
| 2005/09 01 | 09 | 010 | 0 | Private line service |
| 2005/09 19 | 08 | 011 | 7 | Ring again |
| 2005/09 30 | 08 | 012 | 186 | Speed call |
| 2005/09 01 | 09 | 013 | 0 | Voice call |
| 2005/09 21 | 13 | 014 | 17 | Volume control |
| 2005/09 01 | 09 | 015 | 0 | Busy verify |
| 2005/09 01 | 09 | 016 | 0 | Barge-in |
| 2005/09 01 | 09 | 017 | 100 | Call selection |
| 2005/09 01 | 09 | 018 | 0 | Attendant recall |
| 2005/09 01 | 09 | 019 | 0 | Dial intercom |
| 2005/09 06 | 09 | 020 | 84 | Message waiting indicator |
| 2005/09 14 | 09 | 021 | 862 | Message indication |
| 2005/09 06 | 08 | 022 | 630 | Message cancellation |
| 2005/09 06 | 09 | 023 | 46 | Message center INCALLS |
| 2005/09 01 | 09 | 024 | 0 | Attendant overflow |
| 2005/09 13 | 13 | 025 | 1 | Group call |
| 2005/09 13 | 13 | 026 | 35 | Auto Answerback |
| 2005/09 01 | 09 | 027 | 0 | Trunk-mail access restriction |
| 2005/09 02 | 11 | 028 | 1 | Trunk-to-trunk connection |
| 2005/09 01 | 09 | 029 | 0 | Call park |
| 2005/09 08 | 13 | 030 | 4 | Stored number redial |
| 2005/09 19 | 08 | 031 | 770 | Last number redial |
| 2005/09 01 | 09 | 032 | 0 | Malicious call trace |
| 2005/09 01 | 09 | 033 | 0 | Enhanced hot line |
| 2005/09 01 | 09 | 034 | 0 | Group pickup |
| 2005/09 01 | 09 | 035 | 0 | DN pickup |
| 2005/09 14 | 09 | 036 | 21 | Attendant end-to-end signaling |
| 2005/09 01 | 09 | 037 | 0 | Attendant break-in |
| 2005/09 01 | 09 | 038 | 0 | Attendant break-in busy verify |
| 2005/09 01 | 09 | 039 | 0 | Semi-automatic camp on |
| 2005/09 01 | 09 | 040 | 0 | Series call activation |
| 2005/09 01 | 09 | 041 | 0 | Ringing change |
| 2005/09 01 | 09 | 042 | 0 | (reserved) |
| 2005/09 09 | 14 | 043 | 3074 | End-to-end signaling |
| 2005/09 01 | 09 | 044 | 0 | Internal call forward |
| 2005/09 01 | 09 | 045 | 0 | Attendant remote call forward |
| 2005/09 01 | 09 | 046 | 0 | BRI call forward |
| 2005/09 01 | 09 | 047 | 0 | Network intercom |
| 2005/09 01 | 09 | 048 | 0 | (reserved) |
| 2005/09 01 | 09 | 049 | 0 | (reserved) |