Survey on Tehran subway company communication network and review of topology structure of metropolitan network

The structure of communication network systems for public transport and fixing it can always help to improve municipal services. One of the most widely used means of public transport in the city of Tehran subway lines. In this study, to verify the correct way subway network, standards of service and increased stability Networking with other organizations promoting stability and security and increased bandwidth and upgrade monitoring and control service is intended. Using the above criteria, two approaches “by increasing the active equipment optimization” and “increase passive products” have been examined and compared. A questionnaire was used to collect data. After distributing questionnaires among experts subways, using statistical analysis, the effect of each of the criteria listed in the two methods have been investigated and finally the results and recommendations are provided.