Ключевые слова: assistance, business, busy, call, communication, concept, connect, connection, contact, customer, desk, device, disconnected, equipment, global, handset, help, helpdesk, helpline, hook, information, keypad, landline, line, network, nobody, off, office, phone, phoneline, receiver, removed, service, support, telecommunication, telemarketing, telephone, telephony, unavailable, white,