Network Design

ECG Global Services has the breadth and depth of knowledge and experience necessary to design networks that meet the needs of US Government agencies. National network service providers turn to our parent company, ECG, for help in designing in implementing new networks, and we draw on that same body of experience.

The VoIP Network Design provides detailed planning for a new or expanded VoIP network deployment. ECG Global Services designs are straightforward, elegant, and manageable, and based on experience with dozens of major design projects in the US, Canada, and the Caribbean.

Product Goals & Assumptions – Collect and understand the customer’s product and service goals, and expectations about growth.

Existing Network Core – Understand the customer’s existing core network routing and switching equipment and links. Assess the utilization, reliability, and QoS of those links.

Equipment – Identify new equipment recommended to support a new VoIP deployment, or identify equipment that can be re-used. Design for adequate capacity for five (5) years of projected growth.

Network Core – Plan new IP subnets and VLANs to support reliable, scalable VoIP system. Ensure compatibility with detailed subnet requirements for VoIP equipment. Provide VLAN and IP address assignments, along with routing rules and protocols.

Reliability – Collect reliability and fault-tolerance goals, and plan network equipment and protocols to achieve those goals. Analyze failover behaviors based on specific equipment in use.

Security – Design Firewall and Session Border Controller rules or equipment to protect VoIP core switching against theft of service (fraud) or interruption/denial of service. Design MPLS-compatible Virtual Routing and Forwarding (VRF) instances as needed. Recommend equipment placement, and specific firewall rules to support VoIP application.

Quality of Service – Design effective mechanisms for guaranteeing toll-quality audio and faxing for VoIP, including prioritization or bandwidth guarantees across links and routers. Recommend appropriate packet markings.

Physical Connectivity – Plan physical connections for VoIP equipment, accounting for fault-tolerance objectives and hardware capacity limitations.

Management & Control – Design appropriate tools for management, surveillance/packet capture, monitoring, DNS, and time synchronization.
The VoIP Network Design provides a detailed Design Package, typically 30 pages or longer. It is suitable for immediate implementation by an experienced IP network technician.

When to do it - The VoIP Network Design takes place after VoIP equipment has been selected (media gateways, call servers, media servers, etc.), but before network core equipment decisions are finalized, and before the VoIP equipment has been installed. Detailed follow-up discussions with our Technical Staff are included.


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