**Summary:**
This notification, S.O. 3263(E), issued by the Ministry of Communications, Department of Telecommunications on July 16, 2025, declares specific parts of telecommunication networks as Critical Telecommunication Infrastructure under subsection 3 of section 22 of the Telecommunications Act, 2023 (44 of 2023). The declaration is based on the telecommunication service provided.
The designated critical infrastructure includes:
1. **Mobile Services (2G and 3G):** Operational Support Systems (OSS) of Home Location Register (HLR), Signal Transfer Point (STP), and Customer Relationship Module (CRM).
2. **Mobile Services (4G):** Operational Support Systems (OSS) of Home Subscriber Server (HSS) and Customer Relationship Module (CRM).
3. **Mobile Services (5G):** Operational Support Systems (OSS) of AUSF (Authentication Server Function) and UDM (Unified Data Management), and Customer Relationship Module (CRM).
4. **Internet Services:** International Border Gateway Router (IBGR), Master Domain Name Server (DNS), Route Reflector (RR), and Customer Relationship Module (CRM).
5. **Basic Service:** Customer Relationship Module (CRM) and Management system of IMS.
6. **National Long Distance Service:** Systems and applications of MPLSNetwork Operations Centre (NOC) and Customer Relationship Module (CRM).
7. **International Long Distance Service:** Submarine Line Terminal Equipment (SLTE).
8. **Satellite Service:** Systems and applications of Operations and Maintenance Centre (OMC).
The notification was issued under F. No. 18292025-TTSCpart3 and signed by Devendra Kumar Rai, Jt. Secy.
Key Entities Referenced
Telecommunications Act, 2023: An act of the parliament of India relating to telecommunications, referenced as the legal basis for the notification.
Central Government: The executive branch of the Government of India, which is issuing the notification.
Department of Telecommunications: A department under the Ministry of Communications responsible for telecommunications policy and regulation in India.
Critical Telecommunication Infrastructure: Telecommunication network components designated as vital and requiring protection under the Telecommunications Act, 2023.
Mobile Services: Telecommunication services provided to mobile devices (2G, 3G, 4G, 5G).
Internet Services: Services that provide access to the internet.
New Delhi: The capital of India, where the notification was issued.
Ministry of Communications: The government ministry responsible for telecommunications.
रजिस्ट्री स.ं डी.एल.- 33004/99 REGD. No. D. L.-33004/99
सी.जी.-डी.एल.-अ.-18072025-264772
CG-DxLx-xEG-I1D8H0x7x2x0 25-264772
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असाधारण
EXTRAORDINARY
भाग II—खण् ड 3—उप-खण्ड (ii)
PART II—Section 3—Sub-section (ii)
प्राजधकार स ेप्रकाजित
PUBLISHED BY AUTHORITY
स.ं 3193] नई ददल्ली, बृहस्ट्प जतिार, िुलाई 17, 2025/आिाढ़ 26, 1947
No. 3193] NEW DELHI, THURSDAY, JULY 17, 2025/ASHADHA 26, 1947
दरू सचं ार मत्रं ालय
(दरू सचं ार जिभाग)
अजधसचू ना
नई ददल्ली, 16 िुलाई, 2025
का.आ. 3263(अ).— केंद्रीय सरकार, दरू संचार अजधजनयम, 2023 (2023 का 44) की धारा 22 की उपधारा (3)
द्वारा प्रदत्त िजियों का प्रयोग करत े हुए, दरू संचार इकाईयों के नीच े दी गई सारणी के स्ट्तंभ 3 के अधीन जिजनर्दिष्ट दरू संचार
नेटिकि के भाग, िो उि सारणी के स्ट्तंभ 2 के अधीन तत्संबंधी प्रजिजष्ट म ें जिजनर्दिष्ट दरू संचार सेिाओं स े संबंजधत ह,ै को उि
अजधजनयम के प्रयोिनों के जलए महत्िपूणि दरू संचार अिसंरचना के रूप में घोजित करती ह,ै अर्ाित :-
सारणी
क्रम. सं. दरू संचार सेिा दरू संचार नेटिकि के भाग
1. मोबाइल सेिाएँ (2G और 3G) (i) होम लोकेिन रजिस्ट्टर (एचएलआर) की पररचालन सहायता
प्रणाली (ओएसएस);
(ii) जसग्नल रांसफर पॉइंट (एसटीपी); और
(iii) ग्राहक संबंध मॉड्यूल (सीआरएम)।
4776 GI/2025 (1)2 THE GAZETTE OF INDIA : EXTRAORDINARY [PART II—SEC. 3(ii)]
2. मोबाइल सेिाएँ (4िी) (i) होम सब्सक्राइबर सििर (एचएसएस) की पररचालन सहायता
प्रणाली (ओएसएस); और
(ii) ग्राहक संबंध मॉड्यलू (सीआरएम)।
3. मोबाइल सेिाएँ (5िी) (i) एयूएसएफ (प्रमाणीकरण सििर कायि) और यूडीएम (एकीकृत डेटा
प्रबंधन) की पररचालन सहायता प्रणाली (ओएसएस); और
(ii) ग्राहक संबंध मॉड्यलू (सीआरएम)।
4. इंटरनेट सेिाए ं (i) अंतराष्ट्रि ीय सीमा गेटिे राउटर (आईबीिीआर);
(ii) मास्ट्टर डोमेन नेम सििर (डीएनएस);
(iii) रूट ररफ्लेक्टर (आरआर); और
(iv) ग्राहक संबंध मॉड्यूल (सीआरएम)।
5. बुजनयादी सेिा (i) ग्राहक संबंध मॉड्यलू (सीआरएम) और
(ii) आईएमएस की प्रबंधन प्रणाली।
6. राष्ट्रीय लंबी दरू ी सेिा (i) एमपीएलएस-नेटिकि प्रचालन केंद्र (एनओसी) की प्रणाजलया ँ और
अनुप्रयोग; और
(ii) ग्राहक संबंध मॉड्यलू (सीआरएम)।
7. अंतराष्ट्रि ीय लंबी दरू ी सेिा पनडुब्बी लाइन टर्मिनल उपस्ट्कर (एसएलटीई)।
8. उपग्रह सेिा प्रचालन और रखरखाि केंद्र (ओएमसी) की प्रणाजलया ँ एि ं अनप्रु योग।
[फा. स. ं 18-29/2025/टीटीएससी(भाग-3]
देिेन्द्द्र कुमार राय, संयुक् त सजचि[भाग II—खण् ड 3(ii)] भारत का रािपत्र : असाधारण 3
MINISTRY OF COMMUNICATIONS
(Department of Telecommunications)
NOTIFICATION
New Delhi, the 16th July, 2025
S.O. 3263(E).—In exercise of the powers conferred by sub-section (3) of section 22 of the Telecommunications
Act, 2023 (44 of 2023), the Central Government hereby declares the part of telecommunication network specified under
column (3) of the Table below of the telecommunication entities relating to the telecommunication services specified in
the corresponding entry under column (2) of the said Table as Critical Telecommunication Infrastructure for the
purposes of the said Act, namely:-
TABLE
Sl. No. Telecommunication service Part of telecommunication network
(1) (2) (3)
1. Mobile Services (2G and 3G) (i) Operational Support Systems (OSS) of Home Location
Register (HLR);
(ii) Signal Transfer Point (STP); and
(iii) Customer Relationship Module (CRM).
2. Mobile Services (4G) (i) Operational Support Systems (OSS) of Home Subscriber
Server (HSS); and
(ii) Customer Relationship Module (CRM).
3. Mobile Services (5G) (i) Operational Support Systems (OSS) of AUSF
(Authentication Server Function) and UDM (Unified Data
Management); and
(ii) Customer Relationship Module (CRM).
4. Internet Services (i) International Border Gateway Router (IBGR);
(ii) Master Domain Name Server (DNS);
(iii) Route Reflector (RR); and
(iv) Customer Relationship Module (CRM).
5. Basic Service (i) Customer Relationship Module (CRM); and
(ii) Management system of IMS.
6. National Long Distance Service (i) Systems and applications of MPLS-Network Operations
Centre (NOC); and
(ii) Customer Relationship Module (CRM).
7. International Long Distance Service Submarine Line Terminal Equipment (SLTE).
8. Satellite Service Systems and applications of Operations and Maintenance Centre
(OMC).
[F. No. 18-29/2025/TTSCpart(3)]
DEVENDRA KUMAR RAI, Jt. Secy.
Uploaded by Dte. of Printing at Government of India Press, Ring Road, Mayapuri, New Delhi-110064
and Published by the Controller of Publications, Delhi-110054.