Implementing a VoIP system results in added benefits for the company, such as:

- capacity on demand,
- reduced calling costs,
- more powerful traditional features,
- impressive advanced features,
- reduced support costs,
- integration with other protocols, and
- the ability to link with instant messaging and email.

VoIP is implemented using proprietary or open protocol. Proprietary protocol, such as Skype, is a closed-source, or single-owned, protocol. It operates on a peer-to-peer model.

Proprietary protocol is not interoperable with other VoIP networks. For example, LAN and WAN networks are closed systems.

Successful VoIP implementation relies on the network. As a result, many companies have chosen to upgrade and successfully replace their telephony infrastructure with VoIP networks.

IP telephony requires increased bandwidth. It also comes with increased risks. And the networks ability to prioritize traffic, provide security and ensure quality and reliability is essential within a converged voice-data environment.

Frame Relay is a high-speed packet switching WAN protocol typically offered by a public network provider, although some larger organizations manage their own networks.

Frame Relay interconnects remote LANs through the WAN protocol.
 

6 steps for VoIP implementing


- Identify Business and User Needs,
- Understand How VoIP Works,
- Assess Your Network Situation,
- Identify the Right Providers,
- Designing the Solution,
- Understand Your Bill.
 

VoIP implementation across the LAN, across the public network or over a managed IP VPN


The implementation of VoIP can take many configurations. If your office or business setting utilizes a LAN, then VoIP implementation across the LAN is crucial for your success.

Voice calls can be linked using the most common type of Ethernet LAN (10/100 Mbps). One thing to consider on this speed of LAN is using a Voice Compression Module (VCM).

If you are sending general data, it may not be an issue, but for voice data, any slowing or dropped data can leave unacceptable results. For this reason, a VCM can help manage bandwidth issues.

VoIP implementation across the public network means sending VoIP across the traditional telephone network.

This offers some unique issues, as the level of extra services available on traditional phone lines can be limited.

If you are able to use VoIP over higher tech fiber optic lines, like E1 or T1 lines, your implementation can benefit from Q.931 protocol to manage call establishment and connections.

These higher volume lines also allow for H.450 supplementary services, like call waiting, call parking, message waiting, etc.

If your business has VoIP implementation over a managed IP VPN, using a VoIP Gateway allows you to merge your voice and data onto your managed IP VPN.

By definition, a managed IP network is a private network managed by your service provider. Your implementation success relies on your service provider agreement.

You will likely have a service agreement with your provider, specifying levels for throughput and speed.

Note that VoIP over a managed IP VPN can be more secure, cheaper, and more reliable than Frame Relay networks.

IP addresses are assigned. Throughput levels minimize latency and ensure transmission speeds.

Conversely, open protocol is a publicly available, client-server model. Boundaries are disappearing as mobile communications change.

Mobile VoIP use has increased. Customers agree that, “FREE,” is a good price for a more complete communications experiences.

A mobile handset is typically integrated into a VoIP network through SIP protocol that uses a data network to send and receive SIP messaging.

SIP (session initiation protocol) is the standard used by most VoIP services. SIP controls multimedia, voice, and video communications over the Internet.

The network also sends and receives RTP (real-time transport protocol) for the voice path.

H.323 was the first VoIP standard to adopt RTP for sending/receiving multimedia information such as voice, video, or text between any two units.

RTP is typically used in conjunction with RTCP (RTP control protocol). RTCP monitors service quality and transmission statistics.