optical cross-connect

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optical cross-connect

A network device used by telecom carriers to switch high-speed optical signals (OC-3, OC-12, OC-48, etc.). It differs from a digital cross-connect in that it deals with multiple high-speed signals that are switched in their entirety and not multiplexed together.

Also known as "OXCs," optical cross-connects work entirely at the optical layer and may be able to operate without having to convert to electrical and back again. Tellium, Inc., a Bellcore spin-off acquired by Zhone Technologies (www.zhone.com) in 2003, introduced the first optical cross-connect in 1998. See digital cross-connect.
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Test-bed trials have shown that this server technology can perform dynamic network control in an IP optical backbone network consisting of node equipment such as IP routers and OXCs.
Therefore, it becomes necessary that network topology is controlled with an integrated management of both IP routers and OXCs.
Mean plasma homocysteine concentrations in patients who / received VPA monotherapy more than 1 year were significantly higher than those in patients who received OXC.
To our knowledge, small number of data are available concerning the link between Hcy levels and OXC treatment.
Because the OXC is an architecture that can be expanded especially in topology change from a ring to mesh topology without the need for new optic nodes, OXCs need to have a security system that can be used in both situations (Tzanakaki et al.
In a ring network architecture that uses optic OXC nodes, if there is damage involving two or all lines or damage to the nodes, a node near the damage area will be used as a terminal node and all signals will be dropped or directed to a new path that involves a large segmentation area and includes undamaged nodes.
Subjects were randomized to either ESL or OXC, titrated over 3 days to 1200 mg ESL once-daily or 600 mg OXC twice-daily, and treated from day 4 to 9.
In the ESL group, the relative plasma exposure to eslicarbazepine, R-licarbazepine, and OXC was 93.
Blue Sky Research's OXC is based on a micromirror design using an electro-mechanical actuation technology proven reliable in high volume applications, such as optical drives.
CIR believes that, while the OXC and ROADM markets may be "sexier," the optical business is where the opportunities lie.
These efforts include cost control measures, continued deployment of our OXC platform and expansion of our product offerings.
The OXC is based on proven reliable actuator technology that Blue Sky Research has demonstrated in high volume applications such as optical drive actuators.