Upgrade 3CX to v18 and get it hosted free!
Filter by category: 3CX Asterisk Cisco Linux PBX & Softphones Polycom RTP SIP Snom VoIP

SIP transports

From the SIP RFC 3261: All SIP elements MUST implement UDP and TCP. SIP elements MAY implement other protocols. Making TCP mandatory for the UA is a substantial change from RFC 2543. It has arisen out of the…

Read More »

OpenSS7

From thet OpenSS7 Web site: This is an opensource development project (called OpenSS7) to provide a robust and GPL’ed SS7 and SIGTRAN stack for Linux and other UN*X operating systems. Perhaps we should have called it LinuxSS7, or…

Read More »

SER module auth_radius

This module contains functions that are used to perform authentication using a Radius server. Basically the proxy will pass along the credentials to the radius server which will in turn send a reply containing result of the authentication….

Read More »

SER module sms

sms: This module provides a way of comunication between SIP network (via SIP MESSAGE ) and GSM networks (via ShortMessageService). Comunication is possible from SIP to SMS and vice versa. The module provides facilities like SMS confirmation: the…

Read More »

SER module sl

The SL module allows ser to act as a stateless UA server and generate replies to SIP requests without keeping state. That is beneficial in many scenarios, in which you wish not to burden server’s memory and scale…

Read More »

SER module msilo

msilo: This modules provides offline message storage for the SIP Express Router. It stores received messages for an offline user and sends them when the user becomes online. For each message, the modules stores “Request-URI” (“R-URI”) only if…

Read More »

SER module jabber

jabber: This is new version of jabber module that interfaces the SIP server to Jabber instant messaging. Through jabber, messages can be sent to ICQ, MSN and many other IM platforms. It integrates XODE XML parser for parsing…

Read More »

SIP auto-configuration

SIP can be auto-configured using DHCP both in IPv4 and in IPv6 From RFC 3361: Dynamic Host Configuration Protocol (DHCP-for-IPv4) Option for Session Initiation Protocol (SIP) Servers This document specifies a DHCP option that allows SIP clients to…

Read More »

SIP method unsubscribe

From RFC 2848 PINT Service protocol: At some point, either the Client’s representative User Agent Server or the Gateway may decide to terminate the monitoring session. This is achieved by sending an UNSUBSCRIBE request to the correspondent server….

Read More »

PINT

From RFC 2848 This document contains the specification of the PINT Service Protocol 1.0, which defines a protocol for invoking certain telephone services from an IP network. These services include placing basic calls, sending and receiving faxes, and…

Read More »

SIP simple

SIMPLE is the SIP package for Presence and Instant messaging. It’s defined by the IETF and used in the IMS platform defined by the 3gpp forum. From the SIMPLE IETF Working group charter: This working group focuses on…

Read More »

SIP method update

From RFC 3311: UPDATE allows a client to update parameters of a session (such as the set of media streams and their codecs) but has no impact on the state of a dialog. In that sense, it is…

Read More »

SIP method bye

From the SIP RFC 3261: The BYE request is used to terminate a specific session or attempted session. In this case, the specific session is the one with the peer UA on the other side of the dialog….

Read More »

SIP method invite re-invite

From the SIP RFC: …This modification can involve changing addresses or ports, adding a media stream, deleting a media stream, and so on. This is accomplished by sending a new INVITE request within the same dialog that established…

Read More »

SIP method invite

From the SIP RFC 3261: When a user agent client desires to initiate a session (for example, audio, video, or a game), it formulates an INVITE request. The INVITE request asks a server to establish a session. This…

Read More »
Get 3CX - Absolutely Free!
Link up your team and customers Phone System Live Chat Video Conferencing

Hosted or Self-managed. Up to 10 users free forever. No credit card. Try risk free.

3CX
A 3CX Account with that email already exists. You will be redirected to the Customer Portal to sign in or reset your password if you've forgotten it.