why is Cisco OER and PFR important for VOIP services and why VOLICO.COM is the right choice - Essay Prowess

why is Cisco OER and PFR important for VOIP services and why VOLICO.COM is the right choice

why is Cisco OER and PFR important for VOIP services and why VOLICO.COM is the right choice

why is Cisco OER and PFR important for VOIP services and why VOLICO.COM is the right choice

As organizations grow and the need to expand their businesses increases, demand for applications that enhance the performance of real-time applications and user experience. Voice over internet protocol applications has become an integral essential for corporate networks and thus the optimized performance of application is necessary (Frahim, Froom & Sivasubramanian, 2004). Network performance can be greatly enhanced using the Cisco Performance Routing (PfR). PfR enables a network to intelligently select a pathway best suited for application performance requirements. This has an advantage to an organization since operation costs are greatly reduced (Frahim, Froom & Sivasubramanian, 2004).

The Cisco PfR harmonizes with standard routing technologies by enhancing the performance of application by adding the intelligence abilities that enables the selections of the most appropriate pathway (Frahim, Froom & Sivasubramanian, 2004). Wide Area Networks (WAN) are therefore improved on by integrating the intelligence aspect in both the applications performance and load balancing of traffic over the internet. VoIP involves converting voice in to data packets for transmission over the internet. Cisco’s PfR has the intelligence to ingress or egress Wide Area Network pathways (Frahim, Froom & Sivasubramanian, 2004). There are parameters that determine how an application performs. These are accessibility, operational costs, delay, jitters and the Mean Opinion Score. The PfR technology allows the network to load balance incoming and outgoing traffic relative to circuit costs. This load balance is attainable depending on the accessibility, load size, throughput and he cost of establishing a link (Frahim, Froom & Sivasubramanian, 2004).

The Border Control Gateway (BGP) provides accessibility through the creation of a topology that determines the shortest possible path or a least cost pathway. The Cisco PfR enhances the performance of applications by intelligently determining the application’s requirement and the network’s performance capabilities (Frahim, Froom & Sivasubramanian, 2004). Cisco PfR has to be configured to identify the current master controller and accompanying border routers and both the external and internal border router interfaces. Communication between the master controller and the border routers is established through authentication procedures and specific IP addresses (Frahim, Froom & Sivasubramanian, 2004). Monitoring of the network system can then be configured so that when the border routers gets information on interesting traffic prefixes and conveys the information to the master controller. The master controller checks whether such traffic is compatible with configured policies. If the master controller verifies the traffic and then the data in the packets can be transmitted in the network (Frahim, Froom & Sivasubramanian, 2004).

Optimized Edge Routing is software designed and developed by Cisco systems to offer networks automatic route enhancement as well as efficient load distribution for the number of communication links in a network (Frahim, Froom & Sivasubramanian, 2004). Latency is the duration taken to transmit a single unit of data from one point in a network to another. VoIP is greatly affected by latency and more so jitters. Latency involves two delay types, fixed network delay and variable network delay (Frahim, Froom & Sivasubramanian, 2004). Fixed network delay involves the encoding and decoding durations and the overall latency needed for electrical signals as well as optical signals to move from the sender to the receiver. These include packetization, propagation, serialization and processing delays (Frahim, Froom & Sivasubramanian, 2004). The use of high-speed media and advanced network infrastructure reduces the fixed network delay. Variable network delays are precipitated by a networks performance conditions such as congestion, which can greatly determine the latency of a data packet on transit. Queuing delay is the time a packet is delayed in the outgoing queue in a given interface (Frahim, Froom & Sivasubramanian, 2004). Optimized Edge Routing has a Quality of Service feature over which queuing delay can be sufficiently minimized by classifying traffic to differentiate network traffic. Earmarks traffic in accordance with known tendencies and throughput, dropping data packets as rates get to specified thresholds (Frahim, Froom & Sivasubramanian, 2004). Earmarking traffic rates such if some thresholds are detected according to priority and managing outputted packet queues so the low priority packets go not stay to long in the buffer space. For these number of features the Cisco OER and PFR important for VOIP services and volico.com is the right choice.


Frahim, E., Froom, R. & Sivasubramanian, B. (2004). CCNP Self-Study: Understanding and Implementing Quality of Service in Cisco Multilayer Switched Networks. Indianapolis: Cisco Press. Retrieved 1 August 2011 from: http://www.ciscopress.com/articles/article.asp?p=170743