Tandem Transit provides Carriers with

1. ®
The Carriers Connection
“Tandem in the Cloud "®
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2. Tandem Transit LLC.
Tandem Transit LLC. Headquartered in New York, was founded in
2008.
Tandem Transit is fast becoming the peering company of choice
for many telecommunication carriers to exchange off-net traffic
to other non-RBOC carriers.
We simply help Carriers reduce network costs and reduce the
need to rely on the RBOC as their sole transit provider. As
Carriers continue to search for ways to improve their bottom line
and leverage new technologies, Tandem Transit will be the
alternative Tandem to allow all Carriers to exchange any bilateral
voice traffic over an all IP network.
Tandem Transit also provides Local Origination services, ask your
sales representative for more information.
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3. Our objective; Tandem in the Cloud. ™
By being one of the “first-to-market” an all voice over IP “transit” business, we have built significant scale for carrier
interconnections and reduce their reliance on access to public switched telephone networks. We provide services in US
markets and are an integral part of many of our customers’ networks, gaining significant industry knowledge of how they
manage and engineer interconnections. We are launching in 2011 a global tandem solution.
IP-to-IP
We support the following traffic with appropriate
IP-to-TDM
protocol conversion and gateway functionality: TDM-to-IP
Our services allow competitive local carriers to exchange traffic between their networks without using an RBOC tandem or
establishing direct TDM connections. Each Carrier that peers with us is granted access to all other competitive carriers’
connected to our network. All carriers are provided 100% billable CDRs for Carrier Access Billing, We have improved
industry standards on CABS.
Our network is scalable, and allows us to connect to one access point (OCN) on competitive local carrier networks or all
nodes within their network. We continuously publish OCNs/LRNs reports to increase routing options for all carriers joining
the Tandem Cloud.
Competitive Tandem providers also choose Tandem Transit to complete routes unavailable on their networks.
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4. Tandem Transit Service: How Does it work?
illustration purposes only Our Clients are the
service providers
CLEC
ILEC (NON-RBOC)
Voice Call is dipped,
Then compressed and
routed to the terminating All Voice Traffic traverses
carrier by our network Soft Switch/ SBC Transcoder
equipment.
through an IP Protocol:
Wireless
We can interconnect via;
Private IP, MPLS-VPN or
DATABASE GIGe.
Full Transit service and Cable Operators
support. ENUM,
DIP/Lookup, and LNP/LRN/ENUM
Peering ROUTING
CLECS, Cable
Operators, Wireless
Carriers, MSOs
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5. Service Offering Comparison
TANDEM
Feature RBOC (Bell Company)
TRANSIT
BOTH – All IP with
Network TDM Converting to IP capability to accept
TDM
Rate Structure LATA or LOCAL AREA Based National
Network Planning & Restricted to Long Lead time and
No Restrictions
Connectivity Increased CapEx
CABS: Revenue
High % of un-billable Records 100% Billable
Assurance
LNP/eNum Conversion None Yes
ACCESS Local Only Nationwide
Transit Costs State by State complex tariffs Flat Rate
100% - zero point of
Redundancy Zero
failure!
IP Peering Zero Multiple
Minimums DS3 or Dedicated Circuits None

6. Fully Accessible and Redundant IP Network
Multiple Interconnection Points and Transcoding
Our network operations center monitors and supports our tandem network 24 hours a day, 7 days a
week, 365 days a year.
NATIONAL INTERCONNECT
MPLS/ IP
Soft Switch/ SBC Soft Switch/ SBC
Transcoder Transcoder
Soft Switch/ SBC
Transcoder
PEERING PARTNERS
Carriers can Peer from anywhere
CLEC/ILEC
WIRELESS/MSO
CABLE
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7. PEERING IS SIMPLE AND SECURE
Our Carrier Clients may include:
Cable Companies
Competitive Local Exchange Carriers (CLEC)
Interexchange Carriers (IXC)
Wireless Carriers
Independent Local Exchange (ILEC)
Commercial Mobile Radio Service Operators (CMRS)
VoIP providers
Our Upstream Bandwidth Partners provide the IP conduit for our clients to Peer with
our all IP network. We can select from a variety of carriers for optimal performance.
We can provide alternate peering options,
Ask Your Carrier Sales Representative.
All logos are registered trademarks of their respective owners. All rights reserved.

8. How do we know who owns that number?
Fully owned and managed eNum Database and LNP Query Services:
Multiple Call Routing options Transit-ENUM
Carrier A Tandem Transit Carrier C
QUERIES via SIP
ENUM Dipping Convert to
ENUM for
QUERIES via M3UA / IP Transit
SIGTRAN
Carrier B SS7 / SIP Tandem Transit Carrier D
LNP Dipping
Enum is the standard addressing
Live mechanism in which a number
feed is identified within an IP
Network. VoIP technology is
NPAC DB widely used today around the
(Portability, Enum)
Globe and Enum is crucial to its
operation.
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9. Key Carrier Benefits
With Tandem Transit Service,
Telecommunications Carriers can take advantage of:
More efficient call routing to competitive carriers while reducing transit
expenses.
Increased QoS (Quality of Service) and network reliability
Improved revenue assurance with accurate CDRs
Higher quality ASRs (Average Service Rate)
Robust market coverage with direct routes to wireless carriers,
CLECs and cable companies
Flexible peering options including MPLS
Increased redundancy and Network routing options

10. Thank You, Together we can create a new PSTN.
CONNECTING CARRIERS IS
OUR BUSINESS
TANDEM TRANSIT LLC.
1428 36th street
Suite 209
Brooklyn, N.Y. 11218
Office: 718-689-1303
Sales@TandemTransit.com
www.TandemTransit.com