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). | |
|---|---|---|---|---|---|---|
| CAD/CAM Lab | ED | 318 | Department of Engineering Design | 5619 | ||
| Calibration Lab | ESB | 315 | Electrical Sciences Block | 5404 | ||
| Campus Canteen | Campus Cafe | 9473 | ||||
| Campus Community Center | Community Hall | 9423 | ||||
| Canara Bank Manager | Canara Bank | Canara Bank | 9406 | |||
| Canara Bank Office | Canara Bank | Canara Bank | 9405 | |||
| Cancer Biology | BT | 411 | Department Of Biotechnology | 5118 | ||
| Cancer Tissue Storage Facility | New BT | 8 | Department Of Biotechnology | 5135 | ||
| Carbon Zero Challenge Office | New BT | 408 | Department Of Biotechnology | 5328 | ||
| Cardio Vascular Lab | BT | 513 | Department Of Biotechnology | 5127 | ||
| Carpentary Shop | CWS | Central Workshop | 4971 | |||
| Cash | ADB | 1 | Central Administration Building | 8245 | ||
| Casting Lab | MSB | 206 | Mechanical Sciences Block | 5050 | ||
| Casuality-Staff Nurses Station | HSP | 104 | IITM Institute Hospital | 8331 | ||
| Casualty Doctor's Room | HSP | IITM Institute Hospital | 8339 | |||
| Caterpillar Lab | ED | 118 | Department of Engineering Design | 5622 | ||
| CBEEV Lab | Near | Electrical Sciences Block | 5538 | |||
| CC Help Desk | CC | P.G. Senapathy Center for Computing Resource | 5999 | |||
| CC Stores | CC | 218 | P.G. Senapathy Center for Computing Resource | 5996 | ||
| CCE Conference Room | ICSR | 409 | Industrial Consultancy & Sponsored Research Building | 4903 |