Dec 17

grabant converses telefóniques

Reading time: < 1 minute

Tornat al vell sistema telefònic (PSTN, POTS, RTB, RTC, etc) només volia adjuntar un document en format .pdf que explica com montar-nos un sistema molt senzill per grabar les converses telefóniques del nostre telèfon de tota la vida. Obviament aquest problema amb la VoIP és infinitament més senzill de solucionar. Però com que m’han preguntat tantes vegades com fer això he pensat que aquest document podia ser molt útil.

Dec 08

Siproxd – a masquerading SIP proxy

Reading time: 1 – 2 minutes

De ben segur que en la mesura que Movilpoint ho permeti em sentireu parlar molt de VoIP, ja que fa temps que en Xoli i jo hi remenem coses que amb el temps i una canya podrien arribar a ser grosses, mentrestant aquí teniu aquesta utlitat tan interessant: Siproxd

Siproxd is a proxy/masquerading daemon for the SIP protocol. It handles registrations of SIP clients on a private IP network and performs rewriting of the SIP message bodies to make SIP connections work via an masquerading firewall (NAT).

It allows SIP software clients (like kphone, linphone) or SIP hardware clients (Voice over IP phones which are SIP-compatible, such as those from Cisco, Grandstream or Snom) to work behind an IP masquerading firewall or NAT router.

SIP (Session Initiation Protocol, RFC3261) is the protocol of choice for most VoIP (Voice over IP) phones to initiate communication. By itself, SIP does not work via masquerading firewalls as the transfered data contains IP addresses and port numbers. There do exist other solutions to traverse NAT existing (like STUN, or SIP aware NAT routers), but such a solutions has its disadvantages or may not be applied to a given situation. Siproxd does not aim to be a replacement for these solutions, however in some situations siproxd may bring advantages.