VoIP PBX

OSX is finally available for the famous SoftPhone of NCH: Talk Express. This soft-phone is distinguished from others by its simplicity of use and a number of advanced features such as:

• Supports up to 6 lines with the ability to put calls on hold.
• Work with standard or a cap can be used with a set of speakers and a microphone
• Includes codec for data compression (GSM, ulaw, Alawi, PCM and G726), echo cancellation, noise reduction and support to the "comfort noise".
• Implements SIP standard
• It can be configured to work behind NAT and firewalls.
• Support Caller ID and the logging.
• Includes a phone book and speed dial functions.

The product is available as a free download , but there is also a business version that supports more features (multi-conference, call forwarding, DND etc...)

Tags: Call Center Systems | VoIP PBX | Asterisk Consultant Naples | PBX | Voip | Asterisk CTI | PBX | IP Phones | Networking | Linux

---

Development of IVR systems, callcenter, PBX Voip.

---

I must confess: I am a newbie to Asterisk , the popular open source PBX. This does not mean it is not a shrewd user of GNU / Linux . Lately my interest in this software has increased since I'm trying to achieve integration with the PBX currently in use in the company.

Coming from an experience made with GNU / Bayonne - a scripting system with which to build IVR - I had already tried the integration of telephony and Festival. For the uninitiated, the festival is a translation software TTS (Text To Speech, ie from text to speech).

An IVR is essentially an answering machine, or an interactive telephone system: normally have an IVR menu through which perform actions (eg a premium to do this, press 2 to do that, etc.. Etc...) These menus are basically static and still require the use of pre-recorded voices. It 'obvious that having a TTS system that can translate the texts (eg retrieved from a database) to create the IVR much more flexible and personalized.

The difficulty arises because the Festival is, like most software, in English. Fortunately, a group of researchers of CNR Padova a change in the English voices and realize their Italian.

Let's see how to install Ubuntu on the combination Asterisk + Festival TTS in Italian. Prerequisites:

• Ubuntu 6 or 7
• Asterisk 1.4.x 1.2.xo

Of course the instructions are for the Ubuntu distro, but are easily adaptable to your favorite distro.

The steps are:

• Festival Install: apt-get install festival
• Install the entries for Italian festivals: apt-get install festvox-italp16k festvox-itapc16k
• (Ubuntu) Edit the file /etc/init.d/festival : Remove an exit 0 that prevents to start the opening of Festival
• Edit the file /usr/share/festival/voices.scm ; it comes to adding the Italian male or female voice as the voice of default:

(defvar default-voice-priority-list
'(pc_diphone <- maschile
lp_diphone <- femminile

• Edit the file /usr/share/festival/festival.scm to add a macro integration with Asterisk:


(define (tts_textasterisk string mode)
"(tts_textasterisk STRING MODE)
Apply tts to STRING. This function is specifically designed for use in server mode so
a single function call may synthesize the string. This function name may be added to
the server safe functions."
(let ((wholeutt (utt.synth (eval (list 'Utterance 'Text string)))))
(utt.wave.resample wholeutt 8000)
(utt.wave.rescale wholeutt 1.0)
(utt.send.wave.client wholeutt)))

This code is inserted before the last line: (provide 'festival) File festival.scm

• Start the Festival server: /etc/init.d/festival start

At this point, we can use our extension.conf function Festival

exten => 100,1,Answer()
exten => 100,2,Festival(Ciao Mondo)
exten => 100,3,Hangup()

Happy Festival to You!

Tags: Call Center Systems | VoIP PBX | Asterisk Consultant Naples | PBX | Voip | Asterisk CTI | PBX | IP Phones | Networking | Linux

---

Development of IVR systems, callcenter, PBX Voip.

---

Some time ago I subscribed to a phone carrier called Italian Eutelia . The peculiarity is that it is a VoIP telephone service flat brought on a common ADSL 4Mbit: included in the monthly 15 hours of local calls and long distance calls, free calls to all numbers Eutelia.
I must say that the service has always been quality.

A few time, I discovered - through a friend - the existence of a telephone service called Skypho allowing once registration is completed, activate a VoIP account and get a free geographical number (ie 02 xxxxx): with the huge advantage of being able to always have a landline number which should be called

Nothing extraordinary so far, were it not for the fact that the service is provided by Eutelia Skypho! Which means I can call home and all users Skypho free. Moreover the tariffs for outgoing calls to numbers not-Eutelia are quite favorable.

At this point is to just set up a small PBX Asterisk-powered

Tags: Call Center Systems | VoIP PBX | Asterisk Consultant Naples | PBX | Voip | Asterisk CTI | PBX | IP Phones | Networking | Linux

---

Development of IVR systems, callcenter, PBX Voip.

---