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PRI and Business Voice Services
[ specifications  ]
Unified
Network Architecture™
Convergent Networks’ Unified Network Architecture provides carriers with a high-density,
low-cost solution to offload dial-up modem traffic from today’s voice-centric Class
4/5 switches, while also serving as an economical solution for delivering business voice
services, such as PBX trunking over SIP, DAL, T1 CAS, ISDN, PRI and ATM.
The Unified Network
Architecture consists of the PacketMatrix™ Controller, the ICS2000™ media
gateway, the ICSG™ signaling gateway and the Aladdin™ management
system.
Screening,
blocking, number translations and routing functions are provided to other network elements
via the PMC. The PMC holds routing and service intelligence for a network of ICS2000
media gateways, acting as a mediation point between IP applications and AIN applications,
and
a peering point to
other next generation call management and application elements in the network. The ICS2000
media gateway provides flexible voice call interworking between IP, ATM and TDM circuits
for both trunking
and access applications. The ICSG provides consolidated SS7 signaling support for a network
of ICS2000 media gateways and PMCs, while Aladdin provides
standards-based element management and billing mediation.
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PRI Services
Along with support for ISDN Primary Rate Interface (PRI) switching, the ICS2000 provides a wide variety
of physical interfaces to allow interworking between traditional circuit switch networks and high-speed
packet networks, while the ICSG signaling gateway serves as the interface to the SS7 network to
provide interoperability and signaling with the PSTN.
By provisioning PRIs to an ICS2000 media gateway, service providers seeking to increase
dial-up capacity can forward traffic originating from dial-up circuits to a Remote Access
Server (RAS) at a fraction of the cost per port and with significantly less space required
than legacy circuit-switched solutions.
The ICS2000 media gateway is a simple and tactical solution for carriers that have a significant
amount of switch traffic terminating on RAS or modem banks.The ICS2000 interfaces with
an End Office switch via Inter-Machine Trunks (IMTs) to deliver low cost ISDN PRIs for
ISP RAS, which can either be owned and wholesaled by a carrier or owned by an Internet
Service Provider.Customers benefit because they can dial a local number for Internet access
regardless of where the remote access servers are located.
The ICS2000 media gateway provides the ability to group any number of PRIs within one
chassis into a hunt group or configure the hunt group to span multiple chassis.For carriers
providing wholesale modem ports, this allows for extremely flexible modem pooling; while
super hunt groups allow different protocols to be grouped together to span multiple ICS2000
shelves across a virtual switch.
Also, with support for Non-Facility Associated Signaling (NFAS), the ICS2000 can support
20 PRIs of bearer (B) channels using a single data (D) channel, optimizing bandwidth to
the ISP.
Business Voice Services
The ICS2000 media gateway also originates calls to fully support two-way connections to tandem switches
for the transport of revenue-generating voice traffic.
With support for bi-directional traffic to create two-way trunks that can receive and
generate calls, and full LNP and 8XX translation, carriers are able to not only deliver
low-cost, fast Internet access for business customers, but also deliver local and long
distance voice access.
PBX Trunked Voice Services
The ICS2000 enables PBX trunked voice services, allowing carriers to extend their business from pure
PRI offload to high-margin business voice services.PRI voice calls can be delivered to the ICS2000
media gateway from a corporate PBX by means of a T-1 Unbundled Network Element and switched back
to an ILEC or onto a long distance network.
Voice Over IP or ATM Access
For larger enterprises demanding higher bandwidth service delivery, carriers can also leverage the
technology benefits of IP or ATM all the way to the customer premise by deploying SIP-based application
servers or ATM-based Integrated Access Devices (IADs).
The PacketMatrix Controller (PMC) offers the capabilities of the PSTN to IP-based networks.
Since the PMC acts as a service mediation point between SIP and AIN domains, it has the
ability to link applications from IP to the PSTN and extend network resources to third-party
appliation servers using SIP.
With standard line-side signaling, the ICS2000 media gateway is compatible with a number
of intelligent third-party IADs that provide call progress tones and digit collection for
the customer.Support is provided for AAL1 voice and AAL5 data, using PVCs and UNI 4.0 or
Q.2931 signaling for SVC-based networks.
Extreme Density and Performance
A single ICS2000 chassis can switch up to 24,192 protected calls in a fully redundant configuration,
and by stacking three ICS2000s in a standard seven-foot rack, more than 72,000 IP calls can be supported.
Further, a single ICS2000 can scale to more than 16,000 non-blocking simultaneous Class 5 users (over
80,000 subscriber lines with 5:1 oversubscription).
Multiple ICS2000 chassis can be supported by a single ICSG signaling gateway with a single
code point supporting up to 500,000 non-blocking DS0s. For maximum scalability, these ICS2000s
can then be interconnected to form a virtual switch over an IP or ATM-based network.
When leveraging the distribution of call control between the ICS2000 media gateway and
ICSG signaling gateway in tandem and trunking applications, SS7 signaling capacity is designed
to scale up to 10 million Busy Hour Call Attempts (BHCA). This virtual switch configuration
provides unmatched capacity for carriers in need of a low cost, yet highly scalable PRI
switch.
Carrier-Grade Availability and Redundancy
The ability to configure the ICS2000 with economical 1:N interface redundancy, as well as full common
equipment redundancy, provides a highly reliable platform from which to provision services. Coupled
with hot standby operation across all interfaces with stable call presentation and 99.9999% availability,
the NEBS-certified ICS2000 media gateway and ICSG signaling gateway provide carriers with the telephony-grade
reliability required of today ’s public networks. |
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Specifications
Protocol Standards
PSTN: SS7 ISUP, TCAP, GR 303, GR 317, GR 444, GR 394, E911, OSDA, ISDN, PRI, MF, T1 CAS
IP: SIP, RTP, DiffServ*, MPLS*
ATM: UNI 4.0, AAL1 SVCs, AAL2 SVCs
Call Processing and Routing Features
Multi-service Interworking: PSTN, IP, ATM
PSTN/IN Routing: Number translations (1-18 digits), equal access, prepended masking,
digit manipulation, carrier access code-based or dial around calls, operator services,
directory assistance,
trunk hunting, NANP, NPA, NPA-NXX, 10-digit routing, international routing including
city code, called party number routing, number pooling, alternate routes for called party
number, CIC, dial
around 101-XXXX routing, CNAM, TCAP proxy, easily recognized codes, 8XX number lookup
and translation, LNP
Voice Processing Features
Echo Cancellation: G.168 up to 128ms tail delay
Voice codecs: G.711, G.726, G.729 a/b*, G.723.1*
Silence suppression, tones and announcements, test lines, E911 CAMA, tone generation/detection
Class 5 Feature support
SS7 Protocols
ANSI ISUP, SCCP/TCAP AIN 0.1, MTP Layers, A, E or F-links, SS7 over IP (Sigtran, SCTP)*
*Future
releases
For more information, call (978) 323-3300 or e-mail info@convergentnet.com. |
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Application
Notes: