What does COS stand for?

Frame relay is considered a connection-oriented service.

Another consideration is that ATM is a "virtual circuit" connection-oriented service.

The specification defines two service types, connectionless and connection-oriented, organized into three link service classes: connectionless service only; connection-oriented service only; and both connectionless and connection-oriented service.

SUA is used between a signaling gateway and an IP signaling endpoint, or between IP signaling endpoints and supports unordered and in-sequence connectionless services, bi-directional connection-oriented services with or without flow control and detection of message loss and out-of-sequence errors.

Supporting Carrier-class attributes such as 50 millisecond resiliency, Service Level Agreement (SLA) guarantees, TDM services, and integrated network management, the A-4100's functionality includes MPLS, connection-oriented services, and Ethernet services.

This is the first time a solution has been available to allow both traditional, connection-oriented services and new IP services to be seamlessly provisioned from a single OSS interface.

Juniper Networks and Orchestream together offer a number of key benefits to the service provider: --Increasing service revenues Circuit Cross Connects and MPLS deliver efficient point-to-point transport and fully meshed connection-oriented services --Reducing operational cost Automated service activation significantly reduces the time and effort required to configure sophisticated services --Configuring, maintaining and scaling the network Automated provisioning of IP services on platforms that support high density, low and high speed interfaces and with common software across all devices --Ensuring network availability Modular software running in protected memory delivers exceptional reliability and scalability.

25, IP, ATM and several other connection-oriented services.