Unit-unit Bisnis TELKOM terdiri dari Divisi, Centre, Yayasan dan Anak Perusahaan, sebagai berikut :
1. Infrastruktur Telekomunikasi 2. Carrier & Interconnection Service 3. Divisi Multimedia 4. Divisi Fixed Wireless Network 5. Enterprise Service 6. Divisi Akses 7. Maintenance Service Center 8. Training Center 9. Carrier Development Support Center 10. Management Consulting Center 11. Construction Center 12. I/S Center 13. R&D Center 14. Community Development Center(CDC)
Yayasan-Yayasan : 1. Dana Pensiun (Dapentel) 2. Yayasan Pendidikan TELKOM 3. Yayasan Kesehatan 4. Yayasan Sandhykara Putra Telkom (YSPT)
PT Infomedia Nusantara (Infomedia) : Layanan Informasi (baru)
4.
PT. Telekomunikasi Indonesia Internasional : International Telecommunication Services, Investment & Strategic Partnership and Project Management & Consultancy
5.
PT. Pramindo Ikat Nusantara (Pramindo) : Telekomunikasi Telepon Tetap (KSO-I Sumatra)
6.
PT. Multimedia Nusantara (Metra) :Multimedia, pay special TV
7.
PT. Napsindo Primatel International (Napsindo) : Network Access Point
8.
PT Indonusa Telemedia (Indonusa) : TV Cable (baru)