Polycom Vega Gateway appendix Vega FXS for analog telephones

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Hook-flash (also known as recall) can be generated by Vega 50 FXO (not SPA-2000) in order to request the attached FXS to switch to command mode (e.g. to initiate a call transfer on a PBX extension port)

To clear a call the FXO goes ‘on-hook’ – actually it breaks the circuit that was made when the device went ‘off-hook’

The key thing to note is: FXS devices can receive dialled number information but cannot provide it and FXO devices can generate dialled number information but cannot receive it.

Analog applications:

9.a Vega FXS for analog telephones

Analog telephones can be connected directly into the Vega FXS ports. This allows existing or new (and often cheap) analog telephones to be connected into a VoIP system. This can be especially useful where Cat 5 cabling already runs analog phones to peoples’ desks; the Vega can replace the PBX in the telecoms cabinet, the Cat 5 telephone extensions terminate on the Vega FXS rather than on the old PBX.

A major benefit to users is that they see no change to their working environment and equipment. Also in industrial environments, ruggedised analog phones or cheap disposable phones are much more appropriate user devices than the more expensive, non-ruggedised IP phones.

Vega 50 FXS (SIP) can initiate call transfer (blind and consultative), put a call on hold, and can toggle between a caller on hold and a second called party through use of hookflash and DTMF keys on the attached telephones.

Considerations

Message waiting indicator lamp operation is not supported – message waiting indication using stuttered dial tone can be used.

Caller ID is only supplied in sdmf or mdmf formats on the Vega 50 FXS (our range of home gateways support more formats).

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 Analog Applications Pre-sales Engineer’s guideVoIP between sites USPs Telephony NetworkIP Network User experience3rd party product choices Future extensionsVoIP 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 Aim To use internet to provide cheap inter-country calling Pstn toll bypassIVR technologies Tangerine Inc TDM to / from VoIP converter Future extensions 3rd party product choices Aim To save leased line call costs between sites Leased line eliminator for Qsig connections between sitesUser experience Analog connections Vega FXS for analog telephones Considerations FXO connection to a PBX FXS connection to a PBX ConsiderationsCalls FXO to FXS PBX to PBX connectivity using both FXS and FXOCalls FXS to FXO PBX to PBX connectivity using FXO only PBX to PBX connectivity using FXS onlyAnalog long line extensions Mass analog connection using a Vega 400 and a channel bankAxiom provisioning system Broadsoft Alceo ArelNet Softswitch Asterisk SIP proxyAppendix 1 3rd Party Products Alcatel Thomson SpeedTouch 610 routerPBXnSIP GenesysGNU H.323 GateKeeper Ingate SIParator Interactive IntelligenceTangerine Inc SIP / H.323 application server Teleware Siemens’ OpenScape SIPExchange PingTelSonicWall Snom 4S, proxy, media server, Nat traversal filterITSPs and VoIP services Existing firewalls Appendix 2 Things to consider Audio quality