system toolbox » voip

Professional VoIP for PBX Systems

The VoIP-Gateway 5188 provides Voice-over-IP access for PBX systems with up to eight outgoing ISDN channels. No adjustments to the existing PBX are necessary, and its fixed-line numbers remain accessible as before. The voice fidelity of Internet calls offers the same sound quality that ISDN users are accustomed to. Moreover, its integrated bandwidth management can regulate other data streams over the ADSL line during VoIP calls, so that Internet telephony always has optimum connection quality. When multiple calls take place at the same time, the VoIP-Gateway 5188 automatically performs a dynamic codec adaptation. For Internet telephony, the limited upstream throughput of an ADSL line is a critical parameter. This throughput rate should be chosen to accommodate the possible number of simultaneous calls. If ADSL is not available, outgoing calls can be automatically routed over ISDN by a configurable fixed-line fall-back connection. The Gateway supports up to 20 SIP addresses, as well as SIP trunk accounts with DDI. Both ISDN and VoIP calls can use services and convenience features such as call holding, three-party calls, call waiting, call-back on busy, and internal and external call forwarding.
ADSL, Firewall, VPN

The VoIP-Gateway 5188 incorporates an efficient ADSL/ADSL2+ modem and a complete ADSL router. Thanks to dual mode technology, the VoIP-Gateway can also be connected in a network and used with cable or other broadband access technologies. Its integrated packet firewall with stateful inspection ensures LAN security, and supports UPnP and manual port forwarding for local servers. The VoIP-Gateway’s DHCP server provides automatic IP configuration for PCs in the LAN. Network devices connected to the VoIP-Gateway’s four LAN ports can be either interconnected to form one network, or physically and logically isolated from one another. Moreover, the VoIP-Gateway 5188’s IPsec implementation permits secure VPN connections to remote networks and stand-alone PCs. All of the ADSL, router, VPN, and VoIP settings are entered and edited conveniently through a password-protected web page.

našao sam ga prvobitno na švajcarskom internet.ch

tamo on košta 568 CHF što je još povoljnije nego voipango.de

avm ga je objavio 2006-te godine

http://www.freetz.org/

Welcome to Freetz

Freetz (more about the name and history in the FAQs) is a firmware-extension (modification) for the AVM Fritz!Box and devices with identical hardware. The original firmware from the manufacturer is extended with new functions and programs which may be selected by the user. Freetz is free software and is developed by Oliver Metz, Alexander Kriegisch and others.

Warning: the installation of a modified firmware invalidates the manufacturer's warranty!

Since most of the development team and users are German, most of this website is written in the German language.

znači ovo se ne odnosi na ovakve uređaje nego na FRIZ!Box uređaje:

FRITZ!Box is AVM's versatile solution for secure ADSL access from multiple PCs. A router with an integrated ADSL modem, FRITZ!Box offers many options, including USB and LAN ports, WLAN with wireless encryption activated out of the box, and extensions to connect your accustomed phones to Internet telephony.

http://www.avm.com.hr/Produkte/Fuer_Unternehmen/Gateway_5188.html

AVM VoIP Gateway 5188 predstavlja profesionalno Voice over IP rješenje za manje i srednje firme s ISDN priključcima i ISDN kućnom centralom. Po četiri interna i vanjska S0-priključka omogućuju 8 istovremnih razgovora, po volji raspoređenih između Interneta i fiksne mreže. Na taj način mogu i srednja poduzeća na vrlo jednostavan način, bez ikakvih dodatnih zahvata u centralu uživati prednosti profitabilnog i suvremenog VOIP telefoniranja putem Interneta, i to za sve postojeće telefonske aparate, bez ikakvih dodatnih investicija i u samu centralu.