SIP Trunking

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SIP Trunking

• Why is it so important?

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Typical IP PBX Components
Enterprise PBX
PSTN
Enterprise Media Gateway
IP Telephone
TDM
IP

• Today
• IP PBX Capabilities Deployed INSIDE the
  Enterprise
• Hardware gateways connect traditional voice
  circuits

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IP to TDM to IP to TDM
TODAY
AN INTERIM SOLUTION
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IP to TDM to IP to TDM
TODAY
NOW
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This is Real SIP Trunking.

• Pure IP voice connectivity Better Quality
• Flexible number of voice calls Business
  Flexibility
• Less hardware devices to manage Lower Costs
• Single circuit with multiple services Better
  Economics

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Multi-carrier terminations
A
Carrier Softswitch
Enterprise Softswitch
PSTN
Carrier Media Gateway
B
PSTN
Carrier IP Infrastructure
Carrier Media Gateway
C
Enterprise Edge
PSTN
IP Telephone
Carrier Media Gateway
TDM
IP

• Call-by-call termination leverages cost benefits
  of multiple carriers improves performance
• Multiple IP termination points across enterprise
  provide inherent redundant paths
• Multiple carriers inherently provide greater reach

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Comparison of Service ModelsConsumer Business
Business Large Medium Small
Consumer / Residential
Market Segments
Business Models
Voice (LocalLDToll Free), Data, Web Hosting
Bundled Services (Triple Play)
Cheap Dial Tone
Internet Dial Tone
Service Models
Fully Managed
Service Level Agreements, performance fault
monitoring, QoS, etc.
Service Types
SIP Soft Trunking
VoIP Centrex
ATT, BandTel, Cbeyond, Global Crossing,
Starvox, USLEC, XO . . .
ITSP Examples
Comcast, Vonage, Tomato Vine. . .
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Comparing Service Types
Type
Description
Pro
Con

• Providing managed telephone service to a business
  over an IP connection.
• This may be wither a fully managed or
  un-managed IP connection.

• Full service
• No expert staff needed
• Low initial investment

• Little to no control
• Restricted Capabilities

VoIP Centrex

• Providing voice and data services to a business
  over a converged network connection.
• Narrowband Voice Services are broken out
  separately at the customer premise using a media
  gateway.

• Economics of VD convergence

• Narrowband service limited services
• Personnel costs
• CapEx

VoIP Gateway Trunking

• Providing broadband voice and data services to a
  business over a converged network connection.
• Voice services are broadband or all IP to the
  telephony device.

• Economics convergence
• Enhanced Services
• Lowers CapEx

• Personnel costs (compared to VoIP centrex)

SIP Soft Trunking
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Understanding the SIP Trunk Services

• Managed vs. Un-managed (Device Management)
• On-net vs. Off-net (TDM points/IAD, Carrier
  hop-off)
• Quality of Service Capabilities (V quality
  methods)
• Service Level Guarantees (Contractual Warrants)

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THERES MORE

• that makes SIP Trunking important.

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Once youre IP, More opportunities

• The enterprise IP PBX has become a software-based
  unified communications engine
• Easily downloaded, and installed on standard
  servers
• It offers much more than just voice over IP!
• How can you leverage IM, Video, Presence and more?

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Islands of Enterprise IP

• With older TDM connectivity we have islands of IP
• This is not a good model for sharing unified
  communication services among enterprises
• However, with all-IP connectivity

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Bridging the Islands
TDM Telephone
Carrier Softswitch
Enterprise Softswitch
Enterprise Softswitch
PSTN
Carrier IP Infrastructure
Enterprise WAN Router
Enterprise WAN Router
IP Telephone
IP Telephone

• we can envision B2B enhances services
• High Definition Voice
• High Definition Video
• Federated / Shared Presence State Information
• Secured B2B Text Messaging

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You converged your internal network, SIP
Trunking converges your external network.