IP Telephony Signalling Protocol

SIP

The Aculab Session Initiation Protocol (SIP) Stack is available for both Microsoft Windows & Linux.

Scalable Signalling Solution

Aculab’s Signalling & Media Gateway delivers seamless connectivity between IP and TDM networks, ensuring high-performance call routing and protocol conversion for telecom and enterprise applications.

Benefits

Comprehensive and Scalable

Available for both Microsoft Windows Server and Linux. SIP 2.0 freely available for use with Prosody X and Prosody S

Suited for a range of applications

Comprehensive set of functionality used to facilitate a range of enterprise and telco level service applications.

Highly resilient

Dual-redundant architecture means you never lose connectivity.

Global

Wherever your customers are located, the Aculab SIP Stack supports local communications.

Features

Extended SIP APIs

The extended SIP API provides fine-grained access to SIP features that cannot be represented in a protocol independent manner.

Third party Call Control

Ability to redirect media streams between different end points while maintaining call control.

SIP session timer

Detects lost signalling endpoints throughout call duration, facilitating preservation of signalling resources.

Back-to-Back User Agent

Acting as an intermediary; it actively manages communications sessions between SIP end-points. It controls dynamic call routing, authentication and encryption. This feature increases fault tolerance and supports highly redundant session control.

Techical Specification

Standards-based - telo-grade SIP stack able to handle 1,000+ concurrent calls.
Full control - C-based API provides low level control of SIP headers and media SDP.
High resilience - Dual-redundant stack deployment option available.
Choice of OS - Supported on Microsoft Windows and Linux.
Media stack independent - Used with Aculab Prosody X, Prosody S, or your own 3rd party media.
Interoperability - SIP compatibility SIP from: AcmePacket; Avaya; BT; Cisco; Level 3; microDATA; Polycom; Siemens; SNOM; Voxbone – interworks with most other SIP solutions.

Third party call control - The ability to redirect media streams between different end-points and retain the call control.
Fine control of SDP content - Facilitating multiple media streams, non-RTP payload types, third party call control.
Access to raw SIP messages - Enabling applications to be more “SIP aware” and have greater choice when responding to SIP requests.
Custom headers and message bodies - Greater flexibility to call setups, and mid-call signalling. Providing a means of passing PSTN information over IP calls.
No data size limits - Send and receive unlimited size data messages, through the use of char* types and linked lists within the API to represent types whose size is undefined.