The engineer may provide technical direction, coordinate the work of engineers supporting an assigned project, review engineering products, and mentor less-experienced team members, but will not be responsible for employee performance management, staffing decisions, or organizational workforce planning. Enterprise Telephony: Engineer enterprise dial plans, E.164 number normalization, digit manipulation, call routing, SIP trunking, carrier interconnections, PSTN services, voice gateways, voicemail, and emergency-calling capabilities.