Date: 2025-08-07Category: Not ApplicableState: Union GovernmentCountry: India
TRAI Assesses Network Quality Across Itanagar and Naharlagun City, and their adjoining areas in the State of Arunachal Pradesh, Dimapur and Kohima districts and their adjoining areas in the State of Nagaland and Itanagar to Bumla Pass (Tawang) Highway (NH-13) in the State of Arunachal Pradesh, all under North East Licensed Service Area
**Policy Summary:**
In June 2025, the Telecom Regulatory Authority of India (TRAI) conducted independent drive tests (IDT) to assess mobile network quality across the North East Licensed Service Area (LSA). The tests covered Itanagar and Naharlagun in Arunachal Pradesh, Dimapur and Kohima in Nagaland, and the Itanagar to Bumla Pass Tawang highway (NH13) in Arunachal Pradesh. The evaluation included 2G, 3G, 4G, and 5G technologies across urban zones, institutional hotspots, and rural residential areas.
Key performance indicators for voice services included Call Setup Success Rate (CSSR), Drop Call Rate (DCR), Call Setup Time, Call Silence Rate, Speech Quality (MOS), and Coverage. For data services, the assessment focused on Download/Upload Throughput, Latency, Jitter, Packet Drop Rate, and Video Streaming Delay.
**Key Findings:**
* **Call Setup Success Rate (CSSR):** Airtel (90.11%), BSNL (49.45%), RJIL (89.73%), and VIL (67.18%) in autoselection mode (5G/4G/3G/2G).
* **Drop Call Rate (DCR):** Airtel (1.23%), BSNL (6.41%), RJIL (2.17%), and VIL (3.68%) in autoselection mode (5G/4G/3G/2G).
* **Call Setup Time:** Airtel (4.57 seconds), BSNL (3.22 seconds), RJIL (0.87 seconds), and VIL (2.31 seconds) in autoselection mode (5G/4G/3G/2G).
* **Call Silence Mute Rate:** Airtel (4.43), BSNL (3.12), RJIL (8.78), and VIL (7.22) in packet switched network (5G/4G).
* **Mean Opinion Score (MOS):** Airtel (3.96), BSNL (2.57), RJIL (3.74), and VIL (4.22).
* **Data Download Performance:** Airtel (80.01 Mbps), BSNL (3.27 Mbps), RJIL (91.09 Mbps), and VIL (20.89 Mbps).
* **Data Upload Performance:** Airtel (15.84 Mbps), BSNL (3.65 Mbps), RJIL (8.30 Mbps), and VIL (6.93 Mbps).
* **5G Data Services in Hotspots:** Delivered peak download speeds of 299.92 Mbps and upload speeds touching 44.38 Mbps.
The detailed report is available on the TRAI website (www.trai.gov.in). For clarifications, contact Shri B. Praveen Kumar, Advisor, Regional Office, Kolkata TRAI, at adv.kolkatatrai.gov.in or Tel. No. 913322361401.
Key Entities Referenced
Telecom Regulatory Authority of India: The regulatory body that released the Independent Drive Test findings.
North East Licensed Service Area: The geographical area for which the network quality assessment was conducted by TRAI.
Itanagar, Arunachal Pradesh: City in Arunachal Pradesh where network quality was assessed.
Naharlagun, Arunachal Pradesh: City in Arunachal Pradesh where network quality was assessed.
Dimapur, Nagaland: District in Nagaland where network quality was assessed.
Kohima, Nagaland: District in Nagaland where network quality was assessed.
Itanagar to Bumla Pass Tawang Highway NH13, Arunachal Pradesh: Highway route in Arunachal Pradesh along which network quality was assessed.
Airtel: One of the Telecom Service Providers (TSPs) whose network performance was evaluated.
BSNL: One of the Telecom Service Providers (TSPs) whose network performance was evaluated.
RJIL: One of the Telecom Service Providers (TSPs) whose network performance was evaluated.
VIL: One of the Telecom Service Providers (TSPs) whose network performance was evaluated.
Ministry of Communications
TRAI Assesses Network Quality Across Itanagar and
Naharlagun City, and their adjoining areas in the
State of Arunachal Pradesh, Dimapur and Kohima
districts and their adjoining areas in the State of
Nagaland and Itanagar to Bumla Pass (Tawang)
Highway (NH-13) in the State of Arunachal Pradesh,
all under North East Licensed Service Area
Posted On: 07 AUG 2025 2:56PM by PIB Delhi
The Telecom Regulatory Authority of India (TRAI) released its Independent Drive Test (IDT) findings for the
North East Licensed Service Area (LSA), covering extensive city routes of Itanagar, Naharlagun of Arunachal
Pradesh and Dimapur, Kohima of Nagaland and highway route of Itanagar to Bumla Pass (Tawang) along
NH-13 in the month of June 2025. The drive tests, conducted under the supervision of the TRAI Regional
Office, Kolkata, were designed to capture real-world mobile network performance across diverse usage
environments- Urban Zones, Institutional Hotspots, rural residential areas etc.
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Between 2 June 2025 to 23 June 2025, TRAI teams conduced detailed tests across Itanagar,
Naharlagun, Itanagar to Bumla Pass (Tawang) along NH-13 in Arunachal Pradesh and Dimapur,
Kohima in Nagaland covering 270.3 Km of city drive test, 526.6 Km of highway test, 28 Hotspot
locations and 1 Km of walk test. Technologies evaluated included 2G, 3G, 4G, and 5G, reflecting
the service experience of users across multiple handset capabilities. The findings of the IDT have
already been intimated to all the TSPs concerned.
Key Parameters Assessed:
a) Voice Services: Call Setup Success Rate (CSSR), Drop Call Rate (DCR), Call Setup Time, Call
Silence Rate, Speech Quality (MOS), Coverage.
b) Data Services: Download/Upload Throughput, Latency, Jitter, Packet Drop Rate, and Video
Streaming Delay.
The overall mobile network performance in Itanagar & Naharlagun, Arunachal Pradesh and Itanagar
to Bumla Pass, Tawang along NH-13 and Dimapur & Kohima, Nagaland is summarized below:
Call Setup Success Rate- Airtel, BSNL, RJIL and VIL have call setup success rate of 90.11%,
49.45%, 89.73% and 67.18% respectively in Auto-selection mode (5G/4G/3G/2G).
Drop Call Rate- Airtel, BSNL, RJIL and VIL have drop call rate of 1.23%, 6.41%, 2.17% & 3.68%
respectively in Auto-selection mode (5G/4G/3G/2G).
5G Data Services delivered peak download speed 299.92 Mbps and upload speed touching 44.38 Mbps in
hotspots.
In Itanagar and Naharlagun, Arunachal Pradesh the assessment included the areas of - Hollongi
Chariali, Chakma-6, Pom, Chimpu, Doni Colony, C Sector, B Sector, Sood, Papu Nalah, Lobi
Dariya, Himalayan University, Tarajuli, Nirjuli Village and Doimukh etc. TRAI also evaluated real-
world conditions at (i) Arunachal Pradesh State Legislative Assembly, (ii) Commissioner of Tax &Excise Office, (iii) Daily Market new, Naharlagun, (iv) Ramkrishna Mission Hospital through static
testing and at (i) Donyi Polo Airport, Itanagar, (ii) Naharlagun (Itanagar) Rly. Station, through walk-
test.
Along National Highway (NH-13) from Itanagar to Bumla Pass (Tawang) the areas including Sagalee,
Rachi, Pakke Kessang, Rilloh, Jollang, Pampoli, Bana, Palizi, Buragaon, Kimi Village, Tenga Valley,
Bomdila, Thembang, Dirang Village, Rama Camp, Senge, Lhou Jang, Khrimu and Twang, etc. were tested to
understand quality of service during inter-city travel. TRAI also evaluated real-world conditions at (i)
Jaswantgarh War Memorial, (ii) Sela Pass, (iii) Unit Hospital, (iv) Government ITI College, (v) Bomdila
Market, (vi) Ball of Fire Museum , (vii) Palizi Catholic Church, (viii) Government Residential School, (ix)
Post Office, Seppa , (x) Government Middle School, (xi) Office of Additional Deputy Commissioner,
Sagalee, (xii) Laptap Baptist Church, (xiii) Government Secondary School, Toru , (xiv) Hoj- yajee market,
(xv) Sopo Market, (xvi) Government College , Doimukh
In Dimapur and Kohima, Nagaland the assessment included the areas of - the areas of - Khushiabil,
Nagarjan, Thahekhu, Padampukhari, Nihoto, Medziphema, Mengujuma, Kiruphe, Sechu (Zubza), Meriema,
Kohima Vill, Rusoma, Chiedema and Phesama etc.TRAI also evaluated real-world conditions at (i) Dimapur
Railway Station, (ii) Dimapur Airport, (iii) Noune Resort, (iv) Nit Nagaland, (v) Nagaland Medical College,
(vi) Kohima New High Court, (vii) Nagaland University, (viii) Kohima Raj Bhawan to reflect stationary user
experience
Performance against key QoS parameters:
CSSR: Call Setup Success Rate (in %), CST: Call Setup Time (in seconds), DCR: Drop Call Rate (in %) &
MOS: Mean Opinion Score
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The tests were conducted using TRAI suggested equipment and standardised protocols in real-time
environments. The detailed report is available at TRAI website www.trai.gov.in. For any
clarification/information, Shri B. Praveen Kumar, Advisor (Regional Office, Kolkata) TRAI may be contacted
on email: adv.kolkata@trai.gov.in or at Tel. No. +91-33-22361401.
***
Samrat/Allen
(Release ID: 2153500)