VoIP Gateway Considerations

By John Pope

With a challenging economy, it is important to focus on retaining existing customers, reducing costs, and looking for new revenue streams and services. Today, VoIP (voice over Internet protocol) brings many new benefits; however, you also need the proper “gateway” to integrate new features and services.

I see many VoIP implementations that fail to consider the use of intelligent gateways over traditional trunking gateways that just convert VoIP to TDM and vice versa.  While trunking gateways are cheaper than intelligent gateways, the advantages of using an intelligent gateway often outweighs the increased costs.  The following chart outlines the differences and advantages of using an intelligent gateway over a trunking gateway.

Benefit / Feature
Improving Customer Service  
Caller Name (CNAME)YesYes
Recording of Complete CallYesNo
Recording of Multiparty ConferencesYesNo
Automated Notification and Delivery of MessagesYesNo
Reducing Costs  
SIP Refer/Transfer (TBCT)YesNo
SIP Diversion/One NumberYesNo
Number of Pops Supported10245 (Typical)
Nat Traversal – Stun per ConnectionYesNo
Trunking Limit per Gateway16 Spans4 Spans (Typical)
VoIP Limit per Gateway750120
Fax Store and Forward at GatewayYesNo
Single Line Transfers from SwitchYesNo
Increasing Revenues  
Other Voice Services (Skype/Yahoo/AIM)YesNo
FoIP (T38 and G711 per Channel/Call Dynamic)YesNo
Scheduled Routing Based on Date and/or CallYesNo
Click to Call/Caller Routing Based on CampaignYesNo
High-Definition AudioYesNo
Video ConferencingYesNo

As shown in the table, the advantages of using an intelligent gateway are many and should be considered when looking at future business opportunities.  The primary benefits include the opportunities of improving customer service, reducing costs, and increasing revenues.  As VoIP continues to move towards the mainstream and customer needs continue to grow, it is important not to make your sole decision based on your needs today but to also consider the future.

John Pope is the president of CenturiSoft and has been an early implementer of VoIP. You can contact John at 800-866-1929 or john.pope@centurisoft.com.

[From Connection Magazine April 2010]

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