Tellabs Operations, Inc.

Tellabs, Inc.

Christopher V O'Brien

Anthony Leonard Sasak

Robert E Bland

Nirav J Modi

A network device such as a router or switch, in one embodiment, includes a timing analyzer which is capable of providing timing analysis over one or more network circuits. The timing analyzer, in one aspect, receives a data packet traveling across a circuit emulation service ('CES') circuit such as T1 or E1 circuit. Upon obtaining an arrival timestamp associated with the data packet, the arrival timestamp is stored in a timestamp buffer in accordance with a first-in first-out ('FIFO') storage sequence. After identifying the oldest arrival timestamp in the timestamp buffer, an offset is generated based on the result of comparison between the arrival timestamp and the oldest timestamp. The timing analyzer can also be configured to generate timing reports on-demand based on generated offset(s).

Methods and apparatus for providing timing analysis for packet streams over packet carriers

Method and apparatus for providing timing analysis for packet streams over packet carriers

A method and apparatus for dynamically adjusting traffic quality of service ('QoS') on-demand over a communications network are disclosed. The process, in one embodiment, is configured to receive an enhanced QoS request from a user via a first node over a communications network. Upon prioritizing traffic flow in accordance with the enhanced QoS request, the enhanced QoS request associated with the first node is recorded. Upon acknowledging the enhanced traffic QoS, the process routes the information to the first node in accordance to a predefined enhanced QoS.

Method and apparatus for dynamically adjusting traffic QOS in accordance with on-demand request

An apparatus and method for managing and characterizing clock domains in multi-domain networks are disclosed. A process of clock domain management is capable of receiving a data packet or data stream traveling across CES circuit. Upon obtaining a clock domain hierarchy stored in a storage location, the process identifies a clock frequency in the clock domain hierarchy in accordance with the CES circuit. The clock domain hierarchy, in one embodiment, is a searchable database containing information relating to clock domains. The clock frequency is subsequently assigned to a packet processing unit for data processing.

Methods and apparatus for characterizing adaptive clocking domains in multi-domain networks

An apparatus and method for managing clock domain(s) crossing several communication networks are disclosed. In one embodiment, a process capable of managing clock domains receives a data stream over a circuit emulation service ('CES'). Upon storing the data stream in a traffic buffer, the process selects a first clock domain for processing the data stream in the traffic buffer. For example, the process is capable of using the first clock domain to process and/or empty a jitter buffer, which stores CES data packets. The traffic buffer is monitored and the first clock domain can be replaced with a second clock domain if the storage capacity of the traffic buffer indicates that a different clock domain is needed.

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North Aurora, IL, United States of America

Christopher V O'Brien