İstanbul
İkitelli / Başakşehir
OTP, branch telephony, customer service
Business & industrial regions
Practical guides to SMS verification, enterprise voice and Türkiye’s business regions. Editorial content is available in Turkish and English.
Regions are linked to official industrial-zone sources. Use cases are planning suggestions, not claims of local offices, physical network coverage or customer relationships. Service and numbering availability are confirmed per project.
Kocaeli
Gebze OSB
Supplier portals, factory–head office calls
Bursa
Bursa OSB / Nilüfer
Production and after-sales communications
Sakarya
Sakarya 1. OSB / Arifiye
Dispatch notifications, site telephony
Tekirdağ
Çerkezköy OSB
Multi-site voice, shift communications
Ankara
ASO 1. OSB / Sincan
Dealer portals, SIP, technical service
Konya
Konya OSB
Dealer verification and service calls
İzmir
İzmir Atatürk OSB
Order and delivery messages
Manisa
Manisa OSB
ERP notifications, multi-site voice
Gaziantep
Gaziantep OSB
Dealer access and order communications
Kayseri
Kayseri OSB
Dealer, service and after-sales calls
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