# Presentation: 296078

## Carrier Focus on Optical Services

**Wesley K. Kaplow**
**VP, Engineering and Operations**
**Government Services**
**Qwest Communications**

## Multi-service Data Environment

**Goal**: ***Focus on the customer ***
- Enable new services and features through Next Gen optical, packet, & voice technologies
**Solution**: ***Drive profitability by rapid introduction of services***
- Lower the barrier of entry for future services
- Service inter-working and bundling for increased utility
- Streamlined support systems and management
- Network simplification and de-layering
**The network will evolve to a packet based infrastructure delivering end-to-end high value services via broadband access over high-capacity optical transport; employing integrated management & service controls**

**Control/Applications Domain**
**Provides User Specific Service Control**
**Delivers Qwest enhanced features and functionality**
**MPLS/IP Domain**
**For Qwest value-added packet services  (VPNs, existing data services, iQ, VoIP transport)**
**Physical Domain**
**Supplies bandwidth for dedicated / private line transport and packet switched network services**

***Service Control***

***Applications***

***Users***

***Edge***

***Core***

*Platform Services*

***MPLS/IP***

***Optical***

***Access Services***

## Why This Is Important...

**The industry is on the path to service delivery convergence**
**Rapid demands for Core MPLS bandwidth demands increased optical bandwidth, rapid provisioning, and resiliency**
**Access services, based on Ethernet, rapid on-demand provisioning**
**New Services, such as Ethernet transport demands a new model for rapid user controlled provisioning**

***Applications***

**VoIP**
**Enhanced Services**

**VoIP**
**Enhanced Services**

## And it’s Not About Clouds

**Wavelength Switch**
*Routes wavelengths from fiber to fiber and provides optical add/drop functionality, routing wavelengths from fiber to the wavelength gateway. *
**Wavelength gateway**
*Provides access to the wavelength switch for lambda routing and may also serve as a service platform for wavelength demands. It interfaces to the lambda access platform and client devices using optical interfaces of at least 2.5Gbps. The wavelength gateway will present a variety of reach and capacity options. It will also support a variety of DWDM services, including per channel dispersion compensation (at least CD and possibly PMD), wavelength translations, optical path protection, and wavelength regeneration. *
**EXC/Router**
*The EXC provides sub-lambda routing for the network. The EXC will aggregate sub-lambda demands to lambda rates at 10Gbps or 40Gbps. It may incorporate some lambda-gateway and routing functions. It may have integrated long-reach transponders integrated for DWDM transmission. *
**DXC/MSP/Switch**
*The digital cross-connect (DXC) or multi-service platform (MSP) provides sub-lambda access and gateway functionality. It interfaces to client devices over optical or metallic interfaces at rates typically below 1Gbps. It is used as an edge service platform for these lower rate services. The DXC/MSP dynamically aggregates these demands into 2.5Gbps or 10Gbps channels that may be routed directly to another edge switch.*** **

## Wavelength Transport Landscape

**Many different approaches are available in the market today**
**All-optical systems with ROADMs**
**More expensive high-quality optical line systems**
**Virtually unlimited reach (5K+ 10G, 2K+ 40G)**
**Capable of moving any service and are 40 Gbps capable now**
**Able to take advantage of new transponder technologies**
**High electro-optical integration**
**Much cheaper transponders per wavelength**
**Less expensive optical systems**
**A lot more “regens” in the system**
**Limits flexibility of transponder technology**
**In-the-middle systems**
**Expensive transponders using signal processing techniques**
**Much, much cheaper optical systems**
**Ultra-long haul**
**Many limits on future transponder technology**

- Optical/Electrical Integration

- All-Optical Reach

## G.709 and other Enabling Technologies

- Courtesy of Lucent Technologies

## The big challenge...

**New technology is being deployed right now into nationwide networks**
**Both significant upgrades and some new deployments**
**However, the mode of use is not likely to change without customer demand**
**How many will change how they provide services to customers?**
**Commercial carriers are focused on stability and service continuity for optical services**
**Dynamic, user request-based systems is not the model that commercial Operations Support Systems are built to support**

## Our Approach

**Understand customer demand is the first step**
**What do researchers want to do?**
**Is it dynamic multi-gigabit networking?**
**Is it dynamic allocation of wavelengths?**
**Create a commercial and academic partnerships**
**Leverage regional research developments and experience**
**Partner with a vendor for critical components**
**Break the commercial software development model and focus on Service Oriented Architecture models**
**Provide a new beta infrastructure for academic use**
**Gain knowledge of modes of use**
**Explore how to create inter-domain SOA**
**Create a new commercial service**