FreeSWITCH 1.2 (2nd Edition) by Raymond Chandler, Anthony Minessale, Darren Schreiber,

By Raymond Chandler, Anthony Minessale, Darren Schreiber, Michael S. Collins

Build powerful, high-performance telephony platforms utilizing FreeSWITCH.

Overview

• how you can set up and configure a whole telephony approach of your individual, whether this is often your first time utilizing FreeSWITCH.
• In-depth discussions of significant strategies just like the dialplan, person listing, NAT dealing with, and the strong FreeSWITCH occasion socket.
• most sensible practices and specialist information from the FreeSWITCH specialists, together with the writer of FreeSWITCH, Anthony Minessale.

In Detail

FreeSWITCH is an open-source telephony platform designed to facilitate the construction of voice and chat-driven items, scaling from a soft-phone to a PBX or even as much as an enterprise-class soft-switch. it really is constantly interesting to layout and construct your individual telephony process to fit your wishes, however the activity is time-consuming and consists of loads of technical skill.

FreeSWITCH 1.2 involves your rescue that can assist you manage a telephony approach fast and securely utilizing FreeSWITCH. it's wealthy with sensible examples and should offer you all the details and talents had to enforce your personal PBX system.

You will begin with a close description of the FreeSWITCH method structure. Thereafter you are going to obtain step by step directions on easy methods to organize simple and complicated good points on your telephony platform.

The e-book starts through introducing the structure and workings of FreeSWITCH ahead of detailing the right way to plan a cellphone procedure after which strikes directly to the set up, configuration, and administration of a feature-packed PBX. you are going to know about protecting a consumer listing, XML dial plan, and complex dial plan strategies, name routing, and the tremendous strong occasion Socket. you are going to eventually find out about the web group and heritage of FreeSWITCH.

FreeSWITCH 1.2 is an imperative instrument for amateur and professional alike.

What you'll examine from this book

• manage a easy method to make and obtain telephone calls, make calls among extensions, and make the most of uncomplicated PBX functionality.
• installation various gains of this telephony approach with top practices and specialist tips.
• comprehend the interior workings and structure of FreeSWITCH.
• Use complex positive factors to create robust dialplans.
• conquer troublesome NAT issues.
• keep watch over FreeSWITCH remotely with the robust occasion socket.
• Create web-controlled telephony apps with the hot HTTAPI system.
• safe your VoIP communications.

Approach

This e-book is stuffed with useful code examples geared toward a newbie to ease his or her studying curve.

Who this ebook is written for

This ebook is written for IT pros and fans who're attracted to speedy getting a strong telephony process up and operating utilizing the loose and open resource software, FreeSWITCH.

Telephony adventure might be priceless, yet now not required.

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Additional info for FreeSWITCH 1.2 (2nd Edition)

Sample text

J. Appl. , 16,1109 (1972). , Appl. , 14-,-1781 (1970). , J. Polym. , A-~ 1267 (1965). , 1980, pp. 69-77. , Plast. and Rubber Mater. 2, 66 (1979). 1, 639 (1977). , Angew Makromol. Chemie, 58/59, 175 (1977). , Passalacqua, V. and Pilati, F. Polymer, ~, 520 (1975). 4, 1977, p. 337-346. CHARACTERIZATION OF POLYMER BLENDS, BLOCK COPOLYMERS, AND GRAFT COPOLYMERS BY FRACTIONATION PROCEDURES USING DEMIXING SOLVENTS Rainer Kuhn Central Research and Development Bayer AG 5090 Leverkusen, W. Germany INTRODUCTION In polymer analysis the scientific and technical importance of polymeric multi-component systems has increased to such an extent that problems whose solution depends on the separation of chemically different polymers are arising more and more frequently.

In most cases the fractionation was complete after one hour in as far as pure polymer blends, and not block or graft copolymers, were concerned. It will be seen later that even the binary solvent system methyl cyclohexane (MCH)/N,N-dimethyl formamide (DMF) is suitable for the separation of many chemically different polymers. In this case the fact that the densities of the constituents differ greatly is con- FRACTIONATION PROCEDURES USING DEMIXING SOLVENTS 49 ducive to rapid phase separation. At constant temperature the composition of the phases and thus the fractionation efficiency are independent of the volume fraction of the solvent pairs 1 ,5 RESULTS FOR POLYMER BLENDS Table 2 gives a few examples of the fractionation efficiencies of polymer blends obtainable with binary demixing solvent systems 3 • If a polymer is partly crystalline at the separation temperature, it accumulates in a small intermediate layer between the upper phase and the lower phase, which is of higher density.

J 1: 6 ~"",...... \. / "'- ...... 5 ----3' to 2 o Fig. 2 10-2 mo1e/1; t1 = 90 o e; t2 = l1Soe 0; t1 be concentrated on the surface of the phase boundary with localization of polystyrene branches in the matrix. The rubber phase will remain homogeneous until high conversions. The influence of a higher temperature, t2, on such a system allow formation of the final product with the mean value Mg close to the matrix MW. Temperature increase at the first stage or use of a highly effective initiator graft (BP) promotes the growth of graft branch number at the initial stages of the process with simultaneous diminishing of their length.

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