VoIP Termination services from XO

VoIP Termination services for SIP
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Voice Over Internet Protocol (VoIP) Termination provides reliable long distance connectivity for carriers via the XO IP network to terminate an IP-originated call to the Public Switched Telephone Network. It enables enhanced service providers to offer long
distance VoIP access to residential and commercial customers.

XO VoIP Termination can help:

Connect your switch to the robust XO Sonus softswitch infrastructure
Transport your end-users' interstate & intrastate long distance traffic over the high speed XO Tier 1 OC-192 IP backbone
Provide access to the XO IP infrastructure and PSTN for carriers that own a feature server
Eliminate the need to negotiate with multiple vendors or manage a variety of complex interconnection sites and contracts

Applications that qualify for VoIP Termination service include:

VoIP Telephony ASP Applications
Broadband end-user access
IP Fax Services

VoIP Termination can be combined with XO VoIP Origination to provide a complete solution for carriers.


VoIP Termination provides:

Connectivity from an IP network to the PSTN for terminating domestic long distance calls
Nationwide interstate and intrastate termination (outbound) service
Multiple interconnection options — both Session Initiation Protocol ("SIP") and Time Division Multiplex ("TDM")
Reliable intercity transport via the vast XO IP backbone and Sonus infrastructure
NPA NXX billing structure which enables aggressive pricing over LATA/OCN models
All calls billed in six-second increments, with an initial six-second minimum
Detailed usage reporting (hourly, daily, monthly)
24x7 customer and technical support

XO VoIP Termination provides wholesale network capabilities via multiple interconnection options, including:

Private Ethernet Access into XO Session Border Controllers (FastE / GigE)
Dedicated Internet Access into the XO IP Network
Public Internet or "bring your own" access
TDM interconnections can be supported as well (CAS, DS-1 / DS-3, SS7, PRI)

The facts

Long Haul Statistics
16,000 route miles
Eight core BLSR rings
32 long-haul POPs

Metro Statistics
72+ Metro Market
SONET, DWDM capable All Tied to the Long Haul
Complete End to End Solutions

Class 5 switches: 34 DMS 500 and 31 Lucent 5EES
Redundant SS7 network
1,618 rate centers covered with DEOT and tandem trunking
108,000 NPA / NXXs covered via FGD network
90% of the US business population covered

SONUS release 5.1.8
Redundant Network Architecture
G.711, 20 ms, no silence suppression (beter quality) Compression available end of quarter (06)
ACME Session Director Release 1.2.1
Low bit rate coding (G.729), T.38 and RFC 2833 planned for YE05
G.729 is an 8 Kbps coding of voice traffic from 64Kbps
T.38 ITU-Y recommendation defines Internet Facsimile protocol consisting of messages and data exchanged between Facsimile **Gateways using an IP network
RFC 2833 RTP payload for DTMF digits, telephony tones and telephony signals, May 2000
1,000 originating Rate Centers (per May 2005 LERG summary)

Integrated TDM and Packet-based Networks
Integrated TDM and Packet-based Networks
PSTN SS7 compliant network since 1994
VOIP network since 2000
SS7 CAS SIP protocols available
Voice designed as the principal application on the XO network
XO hybrid architecture provides customers proven TDM voice technology with the cost reduction and scalability associated with soft Switching technology
TDM VOIP network allows customers of XO the opportunity to migrate voice and data services in an elegant manner

IP Network

OC-192c IP network on the XO long-haul fiber infrastructure
Inter-city: nine IP core nodes (Juniper)
12 OC-192c circuits
Provide intercity IP transport and peering connectivity
Metro: 62 POPs in 34 markets (Cisco)
Dual uplinks to IP backbone from each market (OC-3C to OC-48c)
Customer Internet access connections (DS-1 to OC-48)
Traffic aggregation (VOIP gateways, Dial and DSL)
BGP is used to learn and advertise all XO customer & Internet routing destinations
OSPF is used to advertise information about available network topology
Customer can use status, RIP or BGP as required

Data Center
Various locations across the US


XO Maintains Robust Peering Connections
XO is fully peered
XO can reach 100% of Internet destination through our public and direct interconnections
XO does not use IP transit to reach any destination
Overall: 50640 Mb capacity to XO peers
Public: 8000 Mb active
8 GigE interfaces at PAIX, Equinix and NAP of America
Direct: 42640 Mb active
Interconnects via OC-3c to OC-48c, FastE and GigE
Majority is OC-12c

Near Future Added Benefits

Building new capacity to support up to (10) 10G waves between any two contiguous XO markets
Ultimately, the system can support up to (40) 10G waves.
The current estimated timeline has the first segments of the network being handed over to XO the beginning to middle of May with *Network augment completed by the end of August

Created by: lejoneric, Last modification: Tue 24 of Oct, 2006 (16:56 UTC)
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