To reach IITM telephone extensions from outside, the caller has to dial prefix (044) 2257-xxxx, where xxxx is the PABX number
For residential PABX lines (wherever provided)
- Replace 8xxx with 9xxx
- Replace 4xxx with 6xxx
If residential line is not provided "Number Not Available" or Engaged Tone will be heard.
Board PABX No : IVRS (8000) / ASR (9000)
| NAME | ROLE | BUILDING | ROOM NO. | BUILDING NAME | OFFICE EXTN (PABX). | |
|---|---|---|---|---|---|---|
| Lift | CYB | Department of Chemical Engineering | 5218 | |||
| Lift | NCCRD | National Centre for Combustion Research and Development | 9897 | |||
| Lift | DOE | Department of Ocean Engineering | 5809 | |||
| Lift - 1 @ C2-4 Block | C2-4 | Residence | 9196 | |||
| Lift - 1 @ C2-5 Block | C2-5 | Residence | 9197 | |||
| Lift - 1 @ C2-6 Block | C2-6 | Residence | 9191 | |||
| Lift - 1 @ C2-7 Block | C2-7 | Residence | 9194 | |||
| Lift - 2 @ C2-4 Block | C2-4 | Residence | 9195 | |||
| Lift - 2 @ C2-5 Block | C2-5 | Residence | 9198 | |||
| Lift - 2 @ C2-6 Block | C2-6 | Residence | 9192 | |||
| Lift - 2 @ C2-7 Block | C2-7 | Residence | 9193 | |||
| Lift - Administrative Block | ADB | Central Administration Building | 8177 | |||
| Lift - New Chemistry | CYB | Department of Chemical Engineering | 5182 | |||
| Lift 1 | HSB | Department of Humanities and Social Sciences Block | 5505 | |||
| Lift 2 | HSB | Department of Humanities and Social Sciences Block | 5506 | |||
| Lift @ B-26 Block | B-26 | Residence | 9180 | |||
| Lift @ B-27 | B-27 | Residence | 9181 | |||
| Lift @ B-28 | B-28 | Residence | 9182 | |||
| Lift @ Campus Cafe | Canteen Block | Canteen | 9230 | |||
| Lift at Aerospace Block | ASE | Aerospace Engg. Building | 5041 |