Promina, SCREAM, and SHOUTIP Platforms

Network

Promina, SCREAM, and SHOUTIP were platforms from Network Equipment Technologies, commonly branded net.com, during the transition from circuit and ATM networks toward IP services. The product names look unusual now, but they reflect a real moment in network history: carriers and enterprises were trying to preserve reliable multiservice access while adding broadband, IP telephony, video, and quality-of-service-enabled packet services.

In 2003, the edge of the network was messy. Operators had TDM private lines, Frame Relay, ATM, DSL aggregation, early broadband remote access servers, IP routing, and voice gateways all competing for shelf space and budgets. A multiservice platform promised to reduce boxes, preserve legacy services, and create a path toward IP revenue without forcing an immediate forklift replacement.

The Platforms

Promina: a multiservice access and switching platform used in mission-critical government, defense, enterprise, and carrier networks. It was known for reliability and for carrying mixed legacy services.
SCREAM: a multiservice edge platform that consolidated ATM switching, broadband remote access server functionality, and edge routing in one unit.
SHOUTIP: a telephony and VoIP platform aimed at IP voice services and enterprise VoIP applications.
SCREAMlink: described as a migration path from Promina-style multiservice networking toward future IP networks.
netMS: net.com's element management system for managing these platforms.

Why They Mattered

Promina mattered because many organizations could not simply abandon legacy TDM and private-line services. Defense, public-sector, utility, aviation, and large enterprise networks often valued deterministic behavior, proven reliability, and service continuity more than novelty. A multiservice access platform let them aggregate mixed traffic types while planning gradual migration.

SCREAM represented the broadband edge. Broadband remote access server, or BRAS, functionality terminated subscriber sessions and applied policy, authentication, accounting, and quality of service. In today's networks, that role is more often discussed as BNG, or broadband network gateway, and it may be implemented on carrier routers, virtualized platforms, or cloud-native software. The basic job remains recognizable: connect subscribers to IP services with policy and control.

SHOUTIP belonged to the VoIP transition. Enterprise and carrier voice were moving from circuit switches and PBXs toward SIP, media gateways, softswitches, and later session border controllers. Firewall traversal, NAT, quality of service, numbering, emergency calling, and security were already difficult problems in early enterprise VoIP.

The 2003 net.com Showcase

For more than two decades, net.com had developed technology that formed part of the backbone of multiservice networking architecture. At ITU Telecom World, the company promoted next-generation networking technologies and service-creation platforms for broadband, IP telephony, and multiservice networks. The platforms were positioned as tools to help network service providers achieve faster return on investment, lower capital expense, and faster delivery of revenue-generating services.

"Twenty years in the telecommunications industry is quite an achievement and is in no small way, testament to the success of our family of products with their resiliency and reliability," said Hubert "Bert" Whyte, president and CEO of net.com.

"The future of our company and indeed business model of the carrier community is service centric and offering QoS enabled IP services. The infrastructure at the edge of the network will combine ATM, IP and BRAS functionality in a non-proprietary environment which are the characteristics of the SCREAM platform."

The SCREAM platform consolidated ATM switching, BRAS functionality, and edge routing in one unit. It was intended to play a critical role at the multiservice edge by working alongside switching equipment to provide QoS-enabled IP services. net.com planned to demonstrate a QoS-enabled IP application in the form of video on demand over DSL, allowing users to increase bandwidth to improve picture quality.

The Promina platform demonstrated the reliability of a multiservice access and switching platform used worldwide for demanding mission-critical applications. net.com continued to develop Promina and promoted SCREAMlink as a migration path to future IP networks.

The SHOUTIP platform was a telephony platform demonstrated in the SHOUTIP kiosk with an enterprise VoIP application designed to address and work around firewall issues.

net.com also hosted the Service Creation Community's presence at the ITU show. The SCC was an independent organization dedicated to accelerating new communications services and provider revenue. Founders and members included Accenture, ADC Telecommunications, HP, Microsoft, net.com, Oracle, Paradyne, and Siemens ICN.

What Changed Since 2003

Network Equipment Technologies was acquired by Sonus Networks in 2012. Sonus was best known for VoIP, session border controllers, and real-time communications infrastructure. Sonus then combined with GENBAND in 2017 to form Ribbon Communications. Ribbon's current portfolio is far removed from the 2003 net.com showcase, but the lineage is clear: multiservice access, voice migration, SBCs, SIP, cloud communications, IP routing, and optical transport are all part of the long move from circuit-era networks to packet and software-driven platforms.

The functions once consolidated in products such as SCREAM now live in different forms. ATM switching is mostly legacy. BRAS became BNG. Edge routing moved into high-scale carrier routers and software platforms. VoIP platforms evolved into SBCs, IMS elements, SIP trunking, CPaaS, unified communications, and cloud contact centers. Promina-style multiservice access remains most relevant in long-lived defense, government, utility, aviation, and critical-infrastructure networks where legacy circuits and deterministic operations still matter.

Modern Equivalents

BRAS/BNG: subscriber management, authentication, accounting, policy, and broadband session termination.
SBC: secure SIP interconnect, topology hiding, media handling, transcoding, NAT traversal, and VoIP policy enforcement at IP network borders.
Carrier Ethernet and MPLS/EVPN: packet-based replacement for many legacy private-line and ATM services.
SD-WAN and SASE: enterprise service overlays that combine access, policy, encryption, and cloud security.
OTN and packet optical: transport-layer evolution for carrying Ethernet, storage, and legacy clients over optical networks.
Cloud communications: APIs, hosted voice, contact center, SIP trunking, messaging, and programmable real-time media.

Migration Lessons

The Promina/SCREAM/SHOUTIP story is a reminder that network migration is rarely clean. Carriers and enterprises do not move from old to new in one step. They bridge protocols, preserve mission-critical circuits, add packet services around the edges, and slowly replace functions as applications and operations catch up.

Inventory legacy services before replacing a multiservice platform; hidden serial, TDM, voice, and alarm circuits are common.
Separate transport migration from service migration. Moving packets is not the same as preserving application behavior.
Design QoS and timing before carrying voice, video, control, or private-line emulation over packet networks.
Use SBCs and strong identity controls when exposing voice services across IP boundaries.
Plan management migration. Element managers, alarm workflows, and technician habits can be as important as hardware features.
For critical infrastructure, maintain rollback paths and spares until new services have been proven under failure conditions.

These platforms were products of their time, but the problem they addressed remains familiar: how to turn a reliable old network into a flexible new one without breaking the services that still depend on it.