© 2008 all rights reserved bandtel proprietary sip trunking: everything you need to know the...

© 2008 All rights reserved ⎯ Bandtel Proprietary

SIP Trunking: Everything You Need to Know

The Service Provider Perspective

February, 2009

Joel Maloff

Senior Vice President of

Sales and Marketing

954-366-0681

[email protected]

2© 2009 All rights reserved ⎯ BandTel Proprietary

Overview

• SIP Trunking is delivered in a variety of fashions by different service providers.– Understanding the distinction between the various service

provision models is essential for enterprises and VARS alike!

– Each service provider has an underlying architecture that impacts their ability to deliver services.

– Each service provider has different strengths and weaknesses.

– What is right for you?


Variations on SIP Trunking

• Within the service provider marketplace today, there are a variety of SIP Trunking flavors.– SIP Trunking via Dedicated Lines

• Requires a T1, DSL or PRI for service delivery• Purports to deliver better quality• Limited footprint to where dedicated service are available• Large recurring cost due to leased lines

– SIP Trunking as a Feature• Provided by vendors of hosted IP PBX or other services• Not normally the primary focus• Competitive with VARS or legacy systems• May have scalability or geographic limitations


Variations on SIP Trunking

– Pure SIP Trunking• The provision of SIP trunks as a primary service

• Not limited in footprint due to geographic restrictions

• Does not compete with VAR offerings or legacy premises equipment

• Can be designed to mirror the quality and performance of tradition telephony service delivery

• Highly scalable


BandTel Technical Description

• Custom Designed N-Plus Architecture– Dynamic Call Routing With N-Plus architecture– Scalable high call transaction engines (via N-Plus) – True five 9's redundancy – Lower operating costs

• Minimal license fees required to primary systems vendors– Excellent Call Quality – Virtual Trunking (many DIDs to one customer premises

Signaling Point)

• Diverse PSTN wholesale carrier relations – Standard services include 1+, 011+, 800, DID – Strong national and international DID product

© 2009 All rights reserved ⎯ BandTel Proprietary

BandTel N-Plus™Network Diagram


SIP Trunking in a Converged Environment

• Combined Voice and Data via a SIP-Aware Firewall (SAFW)

IP Pipe(T1, Cable,

DSL)

LAN-1

MPLS Line Edge Router (LER)

SIP aware Firewall (SAFW)

Notes:1. VoIP and bulk enterprise share the same IP pipe. MPLS tags the VoIP as the highest priority via the LER.2. The SAFW handles all SIP transformation issues between the LAN and WAN demarc.3. Architecture offers full QoS for VoIP4. Excellent utilization of IP pipe resources.

WAN

L2 Smart Hub

Dumb Hub

(P1)(P2)(P3)

Enterprise Bulk IP

Tier I/IIIP Network

SIP UAs

LAN-2



• Comparison with traditional telephony– With PSTN connections, customers receive:

• Called party information (DNIS – Dialed Number Identification Service)

• Calling party information (ANI – Answer Number Identification)• Caller Entered Digits (CED)

– With SIP trunking, this information is also provided per RFC 2833 (http://www.faqs.org/rfcs/rfc2833.html) via the RTP payload for DTMF Digits, Telephony Tones and Telephony Signals.

– CODECs supported include:– G.711– G.729

• CODECs can be changed “on the fly” to meet CPE requirements and address bandwidth limitations.



• Monitoring and Managing (TotalView)– BandTel’s TotalView web-based portal is designed to provide a real-

time view into usage trends for your company or for your customers and clients.

– This includes:• Call details

• Total minutes

• Average Length of Call

• Post Dial Delay

• Actual customer invoices

• BandTel assists you in managing your customer’s accounts.

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TotalView Overview Screen

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Implementing SIP Trunking

• Site Survey– Equipment and software interoperability– Bandwidth sufficiency– Firewall and NAT issues– SIP aware firewalls

• Information system security should be part of an overall SIP trunking implementation plan.

• Direct Inward Dialing (DID) Number Assignment and Porting

• Testing and Troubleshooting

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Does SIP Trunking make sense for you?

• Enterprises– If your organization has the following, you are an excellent

candidate for SIP trunking:• More than US$200 in long distance calling per month

• Enterprise offices and employees are geographically dispersed

• Regular international calling

• The need for local DID numbers in the USA and other countries– Freedom from geographic ties and limitations

• A desire to reduce monthly recurring telephone trunk and calling charges

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• International businesses– SIP trunking offers international businesses the following:

• DID numbers in the USA, Canada, and other select countries worldwide.

• The ability to establish a cost-effective “virtual” presence in most of your major markets.

• Dramatic cost reductions when compared with tradition circuit-based or PSTN services.

– BandTel offers international businesses a partner that is experienced in doing business internationally and focused on delivering superior SIP trunking solutions.

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• VARS and Resellers– Enterprises worldwide are seeking solutions that maintain or

increasing performance while lowering operating costs.– SIP trunking delivers on enhanced features and cost

reduction.– SIP trunking also can provide an additional source of monthly

recurring revenue for VARS and resellers during an economic climate wherein capital expenditures are being curtailed.

• BandTel welcomes inquiries from prospective VARS and resellers.

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What sets BandTel apart?

• We are a PURE SIP TRUNKING PROVIDER!

– Solution oriented rather than technology driven– Bandwidth agnostic– International offerings– Highly scalable network– Superior quality– Exceptional value


Summary

• Understanding SIP Trunking allows you to make informed, effective choices.

• BandTel is a leading provider of Pure SIP Trunking.

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Contact Information

• Thanks very much for your participation and interest!

• BandTel wants to hear from you!

– www.bandtel.com

– [email protected]

– 800-730-2870

– International: 603-528-6538

– The BandTel Team

© 2008 all rights reserved bandtel proprietary sip trunking: everything you need to know the...

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