This paper analyzes telecom consumer relationship by exploring customer switching behavior and classifying communication categories to support companies in planning applicable communication to thwart the consumer switching and improving consumer loyalty. Quantitative research is carried out by surveying 383 telecom consumers who have experienced the switching process. Findings uncover that tele...

Photonic crystal line defect waveguides show high group velocity dispersion and slow photon effect near transmission band edge. The group index of the fabricated silicon photonic crystal line defect waveguide is experimentally demonstrated as high as 45 at optical wavelength around 1558 nm. The group velocity dispersion of the fabricated silicon photonic crystal line defect waveguide is as high...

One of the most challenging problems related to singleended line testing (SELT) is the estimation of the noise power spectral density (PSD) at the customer-premises (CP) side of the line under test, because only measurements at the central-office side (CO) are possible. A solution for the noise caused by crosstalk could consist of first identifying the disturbers present in the cable binder of ...

A measurement, modelling and identification system is proposed to qualify a subscriber line with the constraint that only measurements can be conducted at the Central Office. The system uses the one-port scattering parameter as a base measurement of the loop. The time domain version of this scattering parameter will be pre-processed so that the features, which are the start, maximum and end pos...

One of the major issues in the future Internet is the integration of telecom networks with the Internet. In many countries, large Internet Service Providers (ISPs) are also telecom operators that have been focusing on providing Internet services through their telecom networks with telecom-grade mechanisms. In this article, we show that IP Multimedia Subsystem (IMS) is a telecom-grade mechanism ...

This work addresses the unification of some basic functions and thresholds used in nonparametric estimation of signals by shrinkage in the wavelet domain. The Soft and Hard thresholding functions are presented as degenerate smooth sigmoid based shrinkage functions. The shrinkage achieved by this new family of sigmoid based functions is then shown to be equivalent to a regularisation of wavelet ...