VoIP to SS7 Gateway

1. Introduction
2. SMG Products: SS7 & ISDN 
3. Objectives
4. Features
5. Components
6. Specificationss
7. Deployment Options

Instructions

1. Installation
2. Configuration
3. Operation
4. SS7 Instructions
5. ISDN Instructions 
6. SMG + Asterisk Integration
7. SMG + FreeSWITCH Integration
8. FAQ

 

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Introduction

Sangoma Media Gateway (SMG) is a newly redesigned signalling and media gateway that provides VoIP/SIP to TDM connectivity empowered by Sangoma's AFT line of telephony cards.  SMG is a compact stand-alone software package that runs on top of Sangoma's AFT series of Telephony cards, T1/E1, BRI, Analog. 

SMG Features Highlight

• SMG supports SIP natively, it can operate as a standalone VoIP to TDM (SS7, ISDN-PRI-BRI) Gateway
  SMG exports all SS7 and ISDN parameters via SIP custom X headers.
• SMG can operate in SIP Trunking Mode as a Session Border Controller. 
• SMG supports all Sangoma TDM hardware as well as Media Transcoding hardware.
• SMG supports an extensive IP based CLI.  
  CLI users can connect to SMG from a local machine or from remote servers.
• SMG supports and extensive XML Dialplan.
  Customers can create complex applications and routing plans. 
• SMG is built on top of FreeSWITCH framework.
  FreeSWITCH customers can run their existing dialplan applications directly on SMG.

SMG  Asterisk, FreeSWITCH and Third Party Integration

• Asterisk, FreeSWITCH and other VoIP projects will communicate to SMG via SIP interface.
• SMG has deep integration with Asterisk:
  Custom Asterisk dialplan application is provided to automatically expose all SS7 variables stored in SIP X headers to Asterisk Dialplan and vice versa.
• SMG CLI can be run inside Asterisk CLI providing a single point of configuration, operation and debugging.

SMG as a FreeSWITCH Platform

• SMG is build using FreeSWITCH project.
• SMG product offers a STABLE version of FreeSWITCH that is supported by Sangoma.
  
• SMG releases are stress tested by Sangoma QA team.  Every release is tested with 32E1/T1 to SIP load tests as well as battery of 
  of unit tests on 32bit and 64bit Linux architectures.... 
• SMG TDM components are 100% genuine Sangoma
  Telco Grade, third party SS7,ISDN stacks.
  Sangoma genuine IO modules.  
  100% Commercial friendly: no GPL
  No DAHDI or LibPRI.
  ... 
• Company that is looking at FreeSWITCH as a possible VoIP solution can utilize the SMG project.
  
• Company looking to build its own VoIP to TDM solution can leverage the whole SMG project
  as well as Sangoma's third party TDM stacks and hardware.  The whole project including the stacks can be provided in source.

 

IMPORTANT:
Please note that final product naming/branding as well as pricing and commercial terms are being finalized

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Sangoma Media Gateway Products

 

SMG:  VoIP (SIP) to SS7 Gateway

• The SMG SS7 product has been relaunched as Netborder SS7 to VOIP Gateway.
  The new Netborder SS7 to VoIP now support SIP to TDM (SS7) natively.
  New NSG SS7 to VoIP Location: Netborder SS7 to VoIP Gateway
  
  
• For product information, pricing, training and sales please contact: sales@sangoma.com
  

SMG:  VoIP (SIP) to ISDN (PRI & BRI) & Analog Gateway

• SMG ISDN (PRI & BRI) is considered STABLE and ready for production.
  ... 
• SMG ISDN is currently released with ZERO license cost.  
  ... 
• To request the SMG download link, please contact: smg-request@sangoma.com 

 

SMG:  SIP Back to Back UA: SIP Transcoding Gateway

• SMG SIP Back to Back UA considered STABLE and ready for production.
  ... 
• SMG SIP Transcoding Gateway supports hardware transcoding using Sangoma D-Series Transcoding Cards. 
  ... 
• To request the SMG download link, please contact: smg-request@sangoma.com
  

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Current Version: SMG 3.2  (2011-02-19)

 

Sangoma Meda Gateway Objectives.

1. Sangoma Stand-alone SIP to TDM/Telephony Gateway
2. Sangoma SIP Trunking Gateway: Session Border Controller
3. Sangoma SIP<->SIP/SIP<->TDM Transcoding Gateway
4. Sangoma TDM Gateway for Asterisk
5. Sangoma TDM Gateway for FreeSWITCH
6. Commercial SIP to SS7 Gateway Solution
7. Commercial SIP to PRI/BRI Gateway Solution

 

Sangoma Media Gateway Features

1. VoIP
   SIP
   
   1. RFC 3261 Session Initiate Protocol
   2. RFC 2976 SIP INFO Method
   3. RFC 3398 ISUP-SIP Mapping
   4. RFC 3515 Refer Method
   5. RFC 2327 Session Description Protocol
   6. RFC 3581 An Extension to the Session Initiation Protocol (SIP) for Symmetric Response Routing
   7. RFC 3892 Referred-By Mechanism
   8. RFC 3891 "Replaces" Header
   9. RFC 3551: RTP/AVP
   10. RFC 4168: SCTP as Transport for SIP 
   11. RFC 3515: REFER 
   12. RFC 2617: HTTP Digest Authentication 
   13. RFC 3262: PRACK and 100rel
   14. SDP Bypass
   
   SMG supports SIP natively, therefore it can operate as a standalone VoIP to TDM (SS7 & ISDN) Gateway
   SMG exports all SS7 and ISDN parameters via SIP custom X headers. 
   
   
2. Call Routing Logic
   Extensive and Flexible XML Dialplan can be used to create complex routing scenarios between SIP and TDM. Call routing based on any call parameter present in a TDM call setup message: ISUP,Sigtran*,PRI,BRIAll ISUP/PRI/BRI. Ability to use external applications to build complex routing logic.
   ... 
3. Operation Administration & Maintenance
   SMG is equipped with a powerful CLI that is capable of real time gateway statistics, configuration, and real time on-the-fly re-configuration. The CLI is socket based thus its possible to remotely manage the SMG gateway from a NOC.  CLI can be used to enable powerful logging and debugging, control circuits and gather statistics.   
   
   
4. Redundancy
   SMG SS7 solution uses the Trillium SS7 ISUP/Sigtran* stack.  It supports carrier grade 1+1 Active Standby Fault Tolerance. 
   
   
5. SS7 Protocols
   ISUP,MTP3,MTP2
   SIGTRAN*/SCTP
   
   SMG SS7 solution uses the Trillium SS7 ISUP/Sigtran* stack
   
   
6. ISDN Protocols
   PRI, BRI
   SMG ISDN solution uses the Thrid Party Telco Grade ISDN stacks.
   
   
7. RTP Proxy
   SMG gateway can interconnecting VoIP/SIP end points, the RTP Proxy enables scalable network hiding and NAT/PAT translation.  
   ... 
8. Media Transcoding
   Any to any media transcoding using Sangoma's D100 and D500 hardware. 
   G729,G722,G723,ARM ... 

 

Sangoma Media Gateway Components.

1. Switching Core
2. XML Configuration
3. XML Dialplan 
4. SIP endpoint
5. SS7 endpoint:  ISUP,SIGTRAN*,SCCP*
6. PRI endpoint
7. BRI endpoint
8. Analog endpoint
9. Transcoding SNGTC
10. WebGUI

 

Sangoma Media Gateway Specifications

 

Sangoma Media Gateway Deployments

Single Server Architecture

 

 

 

 

 

Single Server: Signalling + Media + VoIP: TDM to VoIP Gateway

• Capacity up to 32T1/E1s
• Signalling: ISUP,Sigtran (to be released in ver3.4),PRI,BRI
• VoIP: SIP
• Capacity is based on the server used.  

Single Server:  Signaling + Media + Transcoding + VoIP:  TDM to VoIP Gateway

• Capacity up to 32T1/E1s
• Signalling: ISUP,Sigtran (to be released in ver3.4),PRI,BRI
• VoIP: SIP
• Transcoding supported by D100 or D500 device.
• Capacity is based on the server used.  

 

Multiple SS7 Server Architecture

 

 

 

 

 

Single Signaling Server:  Signaling + Media + Transcoding + VoIP:  TDM to VoIP Gateway

• Capacity up to 32T1/E1s
• Signalling: ISUP,Sigtran (to be released in ver3.4)
• VoIP: SIP
• Transcoding supported by D100 or D500 device.
• Capacity is based on the server used. 

Multiple Media only Servers: Media + Transcoding + VoIP:  TDM to VoIP Gateway

• Capacity up to 32T1/E1s
• Signalling: ISUP signaling delivered via IP from Signaling Media Gateway
• VoIP: SIP
• Transcoding supported by D100 or D500 device.
• Capacity is based on the server used. 

 

* Sigtran: (to be released in ver3.4)