Businesses maintained two distinct network infrastructures. These were controlled by two distinct departments as well. The installation and maintenance of these two networks contributes separately to the expenditure incurred by a business. These two networks are:
- A circuit switched infrastructure for voice transmissions. This consisted of a PBX-Private branch exchange connected to the Public Switched Telephone Network (PSTN).
- A packet switched network infrastructure for data transmissions. This was either a Local area network or a Wide area network. This had a gateway to manage the connections and routers to direct the data in the network.
- Will the VoIP project give a positive return on investment
- Will Rebtel replace all the PBX’s that are for the circuit switched network
- What are the added benefits in case of total replacement
- Will the organization be able to tolerate an environment of loss in quality when compared to traditional PBX’s
- Mission critical parts like health and safety operations, Executive staff communication and call center applications and the affect on them needs to be reviewed.
- In case the business already has a LAN or a WAN network Can it be enabled to provide VoIP quality service without major impact on its existing infrastructure
- Are the resources shared? (unified messaging, attendant operators and PSTN trunks)
- What it the user interface(legacy analog/digital phones, IP phones or soft phones)
- Management of VoIP systems in tandem with the traditional telephone systems.
- IP PBX’s are more reliable because of their distributed architecture. It is easily scalable with the growing needs of the organization.
- Unified communications with the ability to send messages, video or email along with the audio is another possibility of VoIP and requires larger bandwidth
- Ease of use is another factor as most employees need not require training to use it
- IP PBS can easily be managed with online logs for calls and thus its usage can easily be identified.