TNCInet Private IP Network Solutions

In buying voice services contact centers are by degree switching from PSTN/TDM to Internet Protocol, most commonly using session initiation protocol or SIP trunking. The day that PSTN’s copper-intensive hardware will join cordboards and electro-mechanical switches as museum pieces is not too distant.

Many contact centers use QoS voice traffic prioritization on MPLS networks. But others are comfortable with using lower-priced if lesser quality open Internet for IP; the argument has been made that growing cellphone use has created a degree of tolerance for unclear calls, anyway until HD Voice becomes widespread.

The carrier marketplace is responding

The carrier marketplace is responding. There are SIP trunking providers and traditional local and long distance firms that are competing intensively for this business with a widening array of competitively-priced services.

Jim Koniecki, technical consultant of unified communications and collaboration for Dimension Data, predicts that by 2015, 60 to 70 percent of contact centers will use SIP trunking versus traditional TDM circuits.

Andy Bird, inContact senior solutions manager, reports that his firm is seeing additional requests for VoIP (Voice over Internet Protocol)/SIP. The smaller contact centers were the early adopters, he points out, nevertheless now there are some of the largest companies that are considering employing these solutions.

The market is evidently demanding more SIP

"The market is evidently demanding more SIP and VoIP connectivity due to the need for reducing costs and increasing functionality," says Bird. "Even though QoS is however a dominant requirement, we are seeing that the market as well wants a non-QoS open Internet VoIP option. This has been increasing over the last few years. Clients are willing to give up quality for an Internet-based solution."

The big move to IP/SIP is its appeal of cost savings, flexibility and its openness. During PSTN rates have plummeted principally from IP/SIP competition there are nevertheless expense reductions to be had. SIP-based VoIP is considered a data service, reports Dimension Data, and is not subject to the same tariffs, fees and taxes as traditional PSTN and is largely unregulated at this time.

IP/SIP as well offers improved and more cost effective routing between multiple contact centers by enabling managers to quickly and easily pre-route incoming calls. With PSTN firms have to buy separate circuits from the individual incumbent local exchange carriers in the areas where their contact centers are located. That meant getting them to talk to each other to balance the loads. Pre-routing PSTN calls is by and large done by carriers, even though at considerable expense.

8x8, in partnership with Contactual, enables its customers to turn on services for specific periods of time. 8x8 provides the entire service, including call routing and access to the contact center platform. Contact centers pay a significantly reduced fee when the service is not being used while nevertheless maintaining its tenant specific configuration and phone numbers so that it can be reinitiated at a moment's notice with no startup costs.

Another driver to IP/SIP is that it enables contact centers to provide increased integrated and seamless multichannel chat, e-mail, IM, SMS/text and video as so then as voice collaboration with clients and colleagues. Unified communications that relies on IP permits agents to bring on board subject matter experts – who can be located anywhere – into customer interactions.

Static service

"PSTN is a static service," says Jeff Betteker, COO of One Source Networks. "It doesn’t offer companies the flexibility and cost-savings let alone feature-rich services that a SIP platform enables."

Most contact centers are all in all on PSTN as they are concerned about IP voice quality, an issue inContact’s Bird says is compounded when calls go overseas. Longer calls, because agents and callers not understanding each other, and dropped calls cost centers money both directly through added interaction lengths and indirectly via annoyed clients and potential missed sales.

"Open internet VoIP is nevertheless an issue," says Bird. "The best practices even so require a router at the customer's site for best effort routing."

Many contact centers are instead provisioning dedicated voice MPLS circuits to transport SIP calls, report Imeish and Koniecki. These circuits connect them to their SIP providers directly for the highest possible quality and lowest latency.

SIP over the public Internet is possible is nevertheless more bandwidth is suggested since QoS mechanisms is best effort; VPNs or session border controllers should be used to encrypt the traffic. During using a dedicated MPLS network provides the same quality and resiliency of traditional of PSTN networks it as well increases costs. To offset, larger contact centers can have the cost of their voice MPLS connectivity bundled into their SIP providers’ monthly bills, says Koniecki.

Variety of methods

To enable QoS 8x8 employs a variety of methods. These range from simple mechanisms just as Class of Service tagging on the LAN – which it says solves most issues for smaller contact centers – to provisioning private or MPLS broadband connections to guarantee end-to-end QoS. Availability – which is related to quality – is as well guaranteed by 8x8; the use of redundant data centers provides even small contact centers with a highly reliable service at minimal cost without the need for IT support from the contact center customer.

M5 only provisions its primary customer locations using private line "on net" connectivity. There is no public Internet VoIP, with no possibility for jitter, packet loss and diminished QoS.

"Contact centers depend upon phone service, so voice quality and reliability are essential," says Jeff Valentine, M5 senior vice president of product marketing.

Yet in totality quality is fading as an issue. Networking hardware, DSPs and codecs have matured and become more reliable. To be sure Koniecki recommends that contact centers evaluate carriers instituting QoS and employing network monitoring and testing software.

Moreover, IP/SIP it can be argued offers greater reliability than PSTN because it offers many more routes available in a network. With IP/SIP if one signaling server, say on the East Coast goes down, just as from a fiber being cut there is probably 15 or 20 other signaling servers on a carrier’s SIP network, explains Koniecki. With PSTN this degree of redundancy, which relies on copper wires and maintaining continuous circuits is not practical. SIP voice traffic reaps the benefits of IP’s existing ubiquity and redundancy.

The right combination of planning

"With the right combination of planning, ISPs, SIP providers, hardware and monitoring, contact centers can confidently use SIP trunking with VPNs to deliver voice over the public Internet," says Koniecki.

Ben Navon, president and CEO of Optimized Business points out that as long as the bandwidth is in place, VoIP is in the extreme reliable and provides the research for fallback routes. He is seeing contact centers switch over to VoIP once they have tested it; they recognize the major improvement in the call quality versus other lines. And he adds there are universal benefits to using VoIP, just as reporting, tools, conversion and product simplicity as so then dramatic cost savings.

"The only concern that contact centers may have is the reliability of VoIP," says Navon. "Everyone that starts using VoIP at any given point in the past, very quickly forgets about these concerns."

Carrier services, driven by IP firms are becoming competitive and versatile. TNCI offers the TNCInet Private IP Network Solutions which includes dedicated long distance, integrated voice and direct Internet access. Contact centers can converge all of their voice, data and Internet applications onto a single private IP network. TNCI uses MPLS VPN for dedicated Internet access with integrated voice services including analog, PRI/CAS as so then as SIP trunking. The TNCInet Dedicated LD Solution for Call Centers features a 15 second average length of call requirement and in the extreme aggressive rates as low as $.0099.

Carriers – and contact center services – have been expanding outside of the U.S. InContact has expanded to Europe and has implemented patent-pending voice gateway innovation to help improve call quality. This will eliminate static and voice delay problems frequently experienced by other providers who do not have infrastructure in the region, improve service to existing clients, and offer a competitive advantage for prospective new multinational accounts.

Carriers continue to make improvements to their IP/SIP networks. One Source Networks has deployed the Sonus GSX9000 high-density media gateway with NBS SBC functionality and the Sonus PSX Centralized Routing and Policy Server. These tools permit the firm to manage and scale their network more easily and efficiently through enabling centralized routing. This method provides consistent service globally and disaster reliability through fully redundant architectures via separate policy servers.

The Sonus solutions as well support transitioning contact centers from TDM to IP. They allow them to implement network architectures that support routing and signal interworking between any IP-PBX (Private -Automatic- Branch Exchange) or ACD.

The public Internet

Others are enabling call-quality-conscious contact center clients to bypass the public Internet. Broadvox uses Covad's IP Backhaul Aggregation Service and Ethernet access services to deliver, prioritize and segment voice traffic. The service provides a high-speed connection to Covad’s nationwide private IP network.

8x8 has introduced new bundled affordable carrier offerings that make it easy for contact centers to get started with basic voice functionality. They can at that time upgrade to more advanced functionality as their needs mature or their business changes.

IP carriers are now offering sophisticated hosted contact center solutions. One of the most recent of these is M5’s purchase of Callfinity. New features include prioritized skill routing, an online evaluation forms designer for quality management, extensive IVR capabilities, CRM integration support, and both real-time and on-demand contact center reporting and analytics. Callfinity products are deeply integrated within M5's core hosted and managed VoIP offering for seamless service.

The incumbent local

The incumbent local and long distance carriers are getting into the game as SIP trunking carriers and with good reason. Not only are the SIP trunking firms taking additional profits from them – during generating revenue by leasing their fiber – however IP costs less to provide than copper/facilities/equipment-energy-heavy and expensive-to-maintain PSTN.

For example, AT&T offers MPLS-enabled IP VPNs, allowing use of a single network to support their voice, data and other business applications. VPN traffic can be prioritized using CoS so a single VPN can support all applications, including VoIP.

Native SIP trunk directly to IP PBXs

Verizon’s Verizon IP Trunking services offer a native SIP trunk directly to IP PBXs; Verizon IP Integrated Access leverages gateway devices that interface with PBXs and key systems. Contact centers can obtain network efficiencies just as sharing trunking resources for multiple centers with Verizon’s Burstable Enterprise Shared Trunking feature. Enhanced IP-based failover solutions from the carrier ensure business continuity, and reliability and performance.

To monitor carrier costs contact centers should take a second look at telecom expense management and broaden its scope from traditional landlines to WANs and to wireless. This method can pay off in spades. Dimension Data did one such analysis for a large hospital and it found that the client was paying for a multimegabyte Internet circuit that was three to four times more than they could pay for it from anywhere else.

Navon recommends doing test calls, considering redundancy/failover options so that your phones will always be up – this is a great feature of VoIP—and ensure that the broadband connection has the needed QoS. As well, avoid signing any long-term contracts, because the service should sell itself. Optimized Business’s VoIPDialing.com subsidiary provides no term or volume commitments or per-trunk fees as then as cost savings.

IP voice quality concerns do not end when the calls arrive at the routers or leave the premises via the carriers. There can be such as many otherwise more issues just as with jitter and latency inside the contact centers on their LANs.

The internal quality challenges arise from bandwidth competition from data on the reports Jeff Betteker, COO of One Source Networks. Services are delivered across a common port and data connection. And there is in the main no QoS – which is commonly available on WANs – to prioritize the voice traffic.

"To preserve quality, it’s essential to evaluate the data environment and determine if the router supports QoS, ensuring that prioritization is set correctly," recommends Betteker. "For instance, when we deliver IP voice equipment to our customers, we provide an IP phone that offers QoS to consistently guarantee quality. "

There can all in all be potential IP/SIP quality issues when connecting with home-based agents, even though these are lessening as both bandwidth and availability increase as carriers compete intensively for residential and small office/home office clients including for IPTV.

Yet the contention point is not much on the residential street pipes whether cable or DSL or wireless anymore however inside the agents’ premises. Jim Koniecki, technical consultant of unified communications and collaboration for Dimension Data, points out agents may purchase bare minimum bandwidth without taking into account other users.

He and his colleague Lawrence Imeish, principal consultant at Dimension Data, advise that contact centers require – and enforce – an acceptable use policy and monitor their home agents to obtain high bandwidth connections and separate IP lines. Or employ routers that segregate business from recreation traffic.

One Source Networks often recommends that the home agents utilize a secure tunnel from the users’ PC back to the carriers’ routers that allows a consistent flow of data, regardless of peering points and type of IP connections.

"Preservation of quality for remote and home workers that utilize consumer-grade Internet is a constant challenge," says Jeff Betteker, COO of One Source Networks.