Today's municipal wireless network vendors must couple innovative access and back-haul technology with forward-thinking network applications and services to win deals. Now these vendors must go further and answer the call from municipalities for business help — such as proving return on investment (ROI). Prominent vendors like BelAir Networks, Cisco Systems, Motorola, and Nortel Networks compete for wins on the basis of technology and services that help their city or service provider customers create a network with a sound business model and high potential for ROI.