Polycom Vega Gateway appendix TDM to / from VoIP converter

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7. TDM to / from VoIP converter

Aim: To allow existing manufacturers of TDM based equipment (switches / IVR systems etc) to have a VoIP offering.

Many manufacturers of TDM equipment are being asked by customers about their policy on VoIP. Other customers are more demanding and informing suppliers that a migration path to VoIP is essential. It is expensive to integrate a full VoIP solution into a product ‘just because a customer has asked’. Use of Vega gateways allows integration of VoIP to existing TDM equipment on an as needed basis.

The Vega gateway connects to the E1, T1 or BRI interface of the existing equipment and can receive calls and convert them to SIP or H.323; the Vega gateway can also receive SIP or H.323 calls and convert them to E1, T1 or BRI calls.

Telephony Network

E1 Euro ISDN signalling and QSIG signalling is supported by Vega 400 and Vega 100

T1 NI1 & NI2 signalling is supported by Vega 400 and Vega 100

T1 Loop start, Ground start and Wink start CAS signalling is supported by Vega 400 and Vega 100

BRI Euro ISDN signalling is supported by Vega 50 BRI

Analog connection is also possible (for details on analog connectivity see later section)

IP Network

Use of SIP or H.323 is defined by the code loaded into the Vega gateway

User experience

The user will now be able to use the functionality that they had achieved using TDM connectivity over a VoIP interface

USPs

Vega gateways are designed to support full system loading, so performance will not degrade as the unit becomes fully loaded

A Vega gateway solution is cheaper than a PC card based solution, and uses dedicated hardware rather than general-purpose hardware.

Version 2.1

16 March 2006

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Vega Gateway Scenarios.

©2005-2006 VegaStream Ltd.

 

Examples are given in best faith – ensure that you check the capabilities of systems before

 

 

deploying them, especially the functionality of devices not designed and delivered by VegaStream.

 

VoIPon Solutions www.voipon.co.uk sales@voipon.co.uk Tel: +44 (0) 1245 600560

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Contents Pre-sales Engineer’s guide Analog ApplicationsVoIP between sites User experience Telephony NetworkIP Network USPsFuture extensions 3rd party product choicesVoIP between sites and home-worker / remote office Telephony Network USPs Version March Vega Gateway Scenarios Telephony Network USPs SNOM, Mitel MKC, IVR technologies, NetSapiens Analog long line extensions IP Network IP Telephony IP Network Pstn toll bypass Aim To use internet to provide cheap inter-country callingIVR technologies Tangerine Inc TDM to / from VoIP converter Future extensions 3rd party product choices Leased line eliminator for Qsig connections between sites Aim To save leased line call costs between sitesUser experience Analog connections Vega FXS for analog telephones Considerations FXS connection to a PBX Considerations FXO connection to a PBXPBX to PBX connectivity using both FXS and FXO Calls FXS to FXOCalls FXO to FXS PBX to PBX connectivity using FXS only PBX to PBX connectivity using FXO onlyMass analog connection using a Vega 400 and a channel bank Analog long line extensionsAlcatel Thomson SpeedTouch 610 router Alceo ArelNet Softswitch Asterisk SIP proxyAppendix 1 3rd Party Products Axiom provisioning system BroadsoftInteractive Intelligence GenesysGNU H.323 GateKeeper Ingate SIParator PBXnSIPSnom 4S, proxy, media server, Nat traversal filter Siemens’ OpenScape SIPExchange PingTelSonicWall Tangerine Inc SIP / H.323 application server TelewareITSPs and VoIP services Appendix 2 Things to consider Audio quality Existing firewalls