Telenor Tier 3 Data Center April 2011

1. Telenor Tier 3 Data CenterApril 2011

2. About Telenor Tier 3 Data Center • Telenor built it´s own Data Centar in accordance with the latest industrial standards. • Telehousing services in Telenor Data Center are available to customers from January 2011. • Telenor´s Telehousing services are tailored to the needs of large companies, financial institutions, ISP´s, content providers and others for whom the service availability and the equipment and IT systems security are of primary business importance. Standards • Telenor Group • Local Standards (SRPS) • RATEL regulations • ASHRAE recommendations • Fire Brigade Regulations • TIA-942 (Telecommunications Industry Association) • Site space and layout • Cabling infrastructure • Tiered reliability • Environmental considerations

3. Data Center Tiers • Multi-million dollar business • 99,995% availability • Annual downtime due to site is 0,04 hours • Two independent utility paths • Fully redundant (2N+1) • Able to sustain 96-hour power outage Fault Tolerant Site Infrastruct. • Large company • 99,982% availability • Annual downtime due to site is 1,6 hours • Multiple power and cooling paths • Fault tolerant (N+1) • Able to sustain 72-hour power outage Concurrently Maintainable Site Infrastruct. • Medium-size business • 99,749% availability • Annual downtime due to site is 22,0 hours • Single path of power and cooling • Some redundancy in power and cooling system Redundant Site Infrastuct. Capacity Components • Typically small business • 99,671% availability • Annual downtime due to site is 28,8 hours • Single path of power and cooling • No redundant components Basic Site Infrastruct.

4. Telenor Tier 3 Data Center One of the most advanced Data Centers in SEE region • Separate stand alone facility with 2.600m2 space with full N+1 redundancy on all mechanical, electrical and connectivity infrastructure • Technical space on three floors • Loading/delivery docking area • Freight elevator, capacity 2,500 kg • Built in the 2009th with the flat roof and without windows • Controlled access to facility via single entrance • More emergency exits Accommodation of user´s telecommunication equipment • Cabinets/racks - Pre-installed standard racks (600x1.070x42U) • Cage – optional • Data room – optional • Space with necessary infrastructure for collocation of storage racks • Web portal – real-time monitoring of all relevant service parameters • Hands & Eyes services • Anti-static floor • Raised floor, construction height 65cm, maximum load 1500 Kg/m2 • Structured cabling (Power cabling under raised floor, Data cabling overhead)

5. Telenor Tier 3 Data Center Power supply • Two independent 10kV underground utility feeders, from different utility transformer substations 110/10 kV • Mains: 3x400/230V AC, 50 Hz (Dry transformers 10/0.4 kV) • Dual power feeds, possibility of maintenance one power branch without affecting the functionality of the system • Redundant UPS systems - 2x(n+1) with total power 2x(3x400kVA), 2h autonomy • Diesel generator backup for all critical loads, 72 hours autonomy (at full capacity) before refueling, 2N redundant • Dual UPS power feed for each rack, fused by 1x32A+1x32A • Power supply system with overload protection and protection discrimination (selectivity) of circuit breakers Air conditioning /Cooling • Redundant air-conditioning, free-cooling chillers, indoor CRAC (Computer Room Air Conditioner) units, (N+1) redundancy • Air-conditioning system separated from the rest of the facility • Environmental conditions control system maintaining constant levels of temperature (22°C - 26°C (24 ± 2°C)) and humidity (40-60% (50 ± 10%)) • Concurrently maintainable air-conditioning and power supply system without threat to availability of the telehousing services

6. Telenor Tier 3 Data Center Security • Physical security system with 24x7x365 access control • Video surveillance of the entire facility providing archive recordings to 3 months • Monitoring elements are connected to alarm systems. All doors are built in accordance with • WK standard • Electronic access control system over ID cards and PIN codes –access allowed only to pre-defined areas, with continual monitoring • The security fence around the building of 2.2m hight is connected with concrete bollards. • Complete site perimeter is secured by IC barriers integrated in existing alarm system. Fire Detection and Suppression • Zoned fire detection system utilising VESDA (Very Early Smoke Detection Aspirating) • Zoned fire suppression system (IG-55) • Fire retarding walls (F90) • Monitoring elements are connected to alarm systems. • Smoke detectors are placed on the ceiling and under the raised floor; functioning in terms of power failor • The closest fire brigade is 12 minutes away from the facility

7. Telenor Tier 3 Data Center Communication infrastructure • ~ 2700 km of fiber optic network in Serbia, Hungary and Bulgaria • Multiple connections with local Internet providers and operators • BGP (Border Gateway Protocol) over several Tier1 ISP`s • DWDM capacity of 40 wavelengths, 10 Gbps per wavelength (expandable up to 80 wavelengths with 40 Gbps per wavelength) • Completely redundant networking equipment with dual power supplies and spare units for all critical equipment • Telenor Serbia is building the best data (All IP) network in Serbia • Services (Dark fiber, Wavelength, SDH capacities, Ethernet solutions) Monitoring • All systems and network are monitored by Telenor`s NOC 24/7/365 • Trouble ticketing system