InForm VOICE

Page 1 — InForm Voice

InForm Voice, IFV, is the ultimate, open and flexible software engine offering any kind of

organization the ideal stack to model their business communication tools around the operational business needs. IFV goes beyond UCC, pulling back voice in the heart of the communication with customers and partners, enhanced by the most advanced messaging, video, collaboration and AI enriched options. Designed for flexibility and maximum availability, IFV operates transparently in cloud, hybrid and on-prem environments, making communication tools available everywhere and

on any device.

Thanks to its innovative concept, IFV offers employees the chance to operate effortlessly from any location ensuring high productivity levels along with the modern work styles (smart, remote, hybrid). The native service- oriented architecture (SOA) and the availability of open web services interfaces facilitate total integration in the business processes, easily managed by powerful system administration and monitoring tools.

CONNECT

InForm Voice enables instant connection across your organization. Using the integrated company directory and presence indicators, colleagues can see real-time availability and reach one another quickly whether inside the office or working remotely. Collaboration has never been faster, easier, or more connected.

COMMUNICATE

Users benefit from a single contact number that works across multiple devices, with seamless call transfers between public mobile and enterprise networks, ensuring uninterrupted communication while on the move.

comtelinternational.com

COLLABORATE

Fully interactive collaboration is just seconds away with video conferencing, shared whiteboards, and screen sharing available at the click of a button. Experience real-time teamwork, now!

Page 2 — Architecture and capacity

Architecture diagram — text description

VOICE runs on Windows and Ubuntu in premises-based and hybrid deployments. Users connect from headquarters, branch offices, customer premises, home offices and mobile locations. PSTN, ISDN and SIP trunks provide connectivity. Unified communications devices include IP and analogue phones, softphones, DECT, Wi-Fi and mobile devices, and web video. Advanced features include call management, call centre, contact centre, call recording, door phones, door switches, presence, alarms, mass notification, hospitality, paging and music on hold.

Total system capacity

• Up to 60,000 lines, in any combination of registered stations and trunks (notes 1 and 2).
• Up to 30,000 UC-enabled user seats.
• Up to 20 Unified Communications Manager (UCM) server nodes.
• Up to 1,000,000 Busy Hour Call Attempts.
• Up to 5,120 media-server sessions for voicemail, auto attendant, call monitor/barge and call recording.
• Up to 20,480 concurrent mobility calls (note 3).
• Up to 2,000,000 contact entries in the 3C system.

Capacity per UCM server node (note 4)

• Up to 6,000 lines in any combination of registered stations and trunks, including up to 999 C-link trunks (notes 5 and 6).
• Up to 3,000 UC-enabled user seats.
• Up to 50,000 Busy Hour Call Attempts.
• Voicemail, auto attendant, call monitor/barge and call recording.
• Up to 1,024 concurrent mobility calls.

SIP support

The source datasheet identifies these as SIP and SIP-related standards supported on the UNIVERGE 3C system (note 9).

SIP stations: RFC2833, RFC3261, RFC3262 (limited support, note 10), RFC3263, RFC3264, RFC3265, RFC3311, RFC3325, RFC3326, RFC3428, RFC3515, RFC3581, RFC3665, RFC3725, RFC3842, RFC3891, RFC4028, RFC4411 and RFC4412.

SIP trunks: the core standard is RFC3261. Originally defined in RFC2543, the current standard is contained largely in RFC3261 and RFCs 3262–3265.

Capacity notes

1. Capacity varies with the number and class of servers, devices and UC client applications.
2. Stations are hard or soft SIP line registrations, including IP phones and analogue phones connected through a media gateway. Trunks are per-bearer-channel registrations, including tie lines and analogue, digital and SIP PSTN connections.
3. Mobility calls are calls to or from external phone numbers assigned to users, on the PSTN or another PBX connected over a tie line.
4. Per-node capacity varies with server class, hosted UC client applications and reserve capacity for failover, among other factors.
5. Redundant multi-node networks reserve capacity for failover. For n nodes, each node has primary capacity ((n−1)×6,000)/n lines and reserves 6,000/n lines for failover. With 2 nodes: 3,000 primary and 3,000 reserved lines per node. With 11 nodes: 5,455 primary and 545 reserved lines per node.
6. C-link is a proprietary protocol for trunking to traditional NEC PBX systems.
7. Capacity and performance vary with server class, network infrastructure and bandwidth.

Page 3 — Security, System Evolution and media

Security (note 11)

• TLS: SIP call control, HTTPS application sessions, configuration-file and firmware downloads over HTTPS.
• sRTP: audio and video media streams.
• RTMPE: InForm Voice Web Conferencing browser audio, video and content sharing.
• User authentication: uniform credentials with Active Directory authentication.
• Security certifications stated in the datasheet: US Department of Defense Joint Interoperability Test Command Unified Capabilities Requirements — Information Assurance, PBX level 1 and Local Session Controller.

Upgrades from existing NEC platforms

Existing UNIVERGE SV customers can expand towards a full IFV system while retaining most applications and legacy hardware. COMTEL offers tailored evolution solutions based on its experience in voice over IP and data networks, and its support for maintaining and expanding earlier NEC systems.

Unified Communications Manager media

• Audio encoding (note 12): AMR-WB, CLEARMODE, G.722, G.722.1, G.729, iLBC, G711a (PCMA), G711u (PCMU), SIREN14, SIREN22, T.38, telephone-event, v150fw and NoAudio.
• Video: H261, H263, H263-1998, H264, MPEG4_QVGA and MPEG4_VGA.
• Resolutions: HD 1280×720 and 1920×1080; VGA 640×480; QVGA 320×240; CIF 352×288; QCIF 176×144.
• Bit rates: 128, 256, 384, 512, 768, 1024, 1472, 1920 and 2048 kbps.
• Frame rates: 10, 15 and 30 fps.
• Web: HTTP/HTTPS. Chat: XMPP.

Collaboration Meeting Manager media

• Audio and video encoding: RTMP.
• Resolutions: 240×144 (8 fps), 256×154 (10 fps), 320×192 (20 fps), 640×384 (20 fps).
• Bit rates: 50, 100, 512 and 1000 kbps.
• Frame rates: 8, 10 and 20 fps.
• Chat: HTTP/HTTPS.

Additional source notes

8. This is accomplished by separating the UNIVERGE 3C Phones Server module from the other parts of the CMM server.

9. NEC does not claim to support all aspects of the standards or ensure full interoperability with every SIP device. Features and functions are supported for certified SIP stations; see product manuals.

10. Limited support for RFC3262. 11. Capabilities vary with selected endpoints. 12. Supported codecs and media formats vary by endpoint; certain media services may restrict codec use. Refer to the UNIVERGE 3C system requirements.

Page 4 — Operating systems and infrastructure

InForm Voice brings together unified communications to support performance and agility. NEC UNIVERGE SV customers can follow a System Evolution path to IFV while preserving existing assets and adding next-generation capabilities.

Operating systems and environments

• UCM server: Windows Server 2022 or 2019, 64-bit, Standard or Datacenter with GUI, English.
• IFV UCM Ubuntu version: Ubuntu 22.04 LTS Desktop required; 8 GB RAM, 4 CPU cores and 250 GB SSD/HD.
• Desktop UC client: Windows 11, Windows 10, Apple Mac OS X 10.6 or later.
• Outlook Connect add-in: Outlook O365, Outlook 2019, Windows 11 and Windows 10.
• Mobile UC client: iPhone iOS 15.0 or higher; Android 9.0 or higher required, processor 1 GHz or higher required, recommended resolution 480×800 pixels and 4-inch screen.

IT infrastructure compatibility

• Virtualized servers: Microsoft Windows Hyper-V Server 2019 v10.0.17763.1, Hyper-V Server 2016 v6.2 and VMware v7.0 or higher. Host and guest operating systems require the operating systems listed in the source operating-system section.
• Active Directory: Windows 2016 or 2012 schema; single and multiple forests; user authentication, user information and directory search.
• Exchange: Microsoft O365 and Exchange 2019; voicemail/unified messaging, Global Address List search and calendar presence.
• Network services: DHCP, DNS and optional multicast IGMPv2.

High availability

• Primary UCM: 1+1 active/standby with virtualization and automated live migration.
• Secondary UCM servers: N+1 active/active; periodic database replication to all secondary servers.
• Media gateways and IP phones: automated failover/failback to designated UCM servers.

Source version 05.03.26. COMTEL International, Marathon 2, 3rd Floor, 1213 PH Hilversum, The Netherlands. Email: info@comtelinternational.com. comtelinternational.com. Copyright 2026. All rights reserved.

Page 1

IFV is designed for a flexible deployment strategy,

which makes evolution from the traditional platforms

easy and efficient, accommodating the evolving needs

of organizations which must consider high availability

and disaster recovery as pillars of their IT wider design.

Traditional server based/on-prem models can be mixed

with full virtualized/cloud and hybrid high availability

architectures.

IFV EVOLUTION ADVANTAGES

> The original investment is no more limited to the

NEC announced strategy and will last and evolve with

your business

> COMTEL superior support and IFV solid software

assurance policies will make your communication solution

more secure and always up to date

> IFV offers a native high availability concept, deployable

flexibly any time when evolving, or in future

> IFV provides powerful open interfaces to support

integration with business solutions

EVOLVING WITH COMTEL

> Only COMTEL can offer the IFV based evolution path

for the installed systems, regardless their current status

and location

> IFV is ideal for the evolution of the Philips SOPHO and

NEC SV series installed systems

> Evolving to IFV assure enhanced lifetime, continued

support and stronger security to your earlier investments

> Only COMTEL authorized and certified partners, routinely

trained by central COMTEL Academy, can provide these

superior evolution services.

comtelinternational.com

COMTEL innovative InForm Voice, IFV, is designed to offer to NEC customers installed base

the ideal path to evolve the existing systems, retaining and revamping the original investment,

modelling the evolution plan according to real needs and investment capacity. The evolution of

the traditional NEC and Philips communication systems will allow customers to flexibly adopt

the wide range of text, video, mobility and collaboration voice apps as well as the new range of

dedicated terminals, which are part of the wider IFV proposition.

InForm voice
EVOLUTION

Page 2

REVAMPING AND OPTIMIZING

> IFV Evolution path offer the possibility to transform

existing NEC SV and Philips SOPHO systems in “media

gateways”, retaining TDM components such as analogue

extensions, traditional DECT and trunks

> IFV support can evolved SIP protocol (CCIS) developed to

grant deep integration with NEC SV systems

> The existing NEC IP Terminals can be re-used under IFV1

> Relevant business applications such as Contact Centres

and Operators (BCT), mobility (DECT) and vertical

application software (eg. Hospitality Tiger TMS) can also

be retained on IFV

> Installed Philips SOPHO systems, even in large and

complex multi-site networked configurations, can be

easily implemented with dedicated hardware and software

components to become fully integrated parts of a new,

fully distributed and high available IFV deployment

(COMTEL “Media Gateway” concept)

EXTENDING THE HORIZON OF INVESTMENTS

> COMTEL IFV evolution provides customers with great

benefits, extending the horizon of their earlier investments

v.05.03.26

COMTEL International

Marathon 2, 3rd Floor

1213 PH Hilversum, The Netherlands

E-mail
info@comtelinternational.com

comtelinternational.com

© Copyright 2026. All Rights Reserved.

> Additional benefits come from re use of skills of own IT

specialists and users, who are not confronted with totally

new behaviours of the communication solution

> All the innovative IFV functions become available and can

be flexibly deployed when and if necessary

TOTAL SECURITY AND AVAILABILITY
BECOME TRUE

> IFV is natively designed to provide maximum security and

availability

> IFV is US DoD Certified under the JITC standards (Joint

Interoperability Test Command)

> IFV is a distributed, liquid, solution with native high

availability

• Up to 20 layers of resiliency (local and geographical)

• Active-active concept
• No downtime in case of problems at one or more of the

deployed UCM

• Ready to run on any common use virtualization

environment, both under MS and Linux

Comtel “Media Gateway”

EVOLUTION AND REVAMPING

SOPHO
SV9500

SV9300
SV9100

Any 3rd party SIP

APPLICATION
MEDIA GATEWAY

SBCs

Private - Hosted -

Hybrid - CLOUD

SIP Trunks

PTSN
CCIS

1 Conversion Possible DT900: ITK-5D-1 , ITK-6DG-1, ITK-12D-1, ITK-12DG-1, ITK-8LCK-1, ITK-8LCG-1, ITK-32LCG-1, ITK-8TCGX-1, ITK-32TCG-1, DT820: ITY-6D-1

ITY-6DG-1, ITY-8LDX-1, ITY-8LCK-1, DT700/DT730G: Any ITL mode – No Conversion Necessary DTS900S: ITK-5DGS-1, ITK-32LCGS-1, ITK-32TCGS-1
Conversion NOT Possible DT900: ITK-12CG-1, ITK-12CG-2, ITK-24CG-1, ITK-24CG-2, ITK-60-2, ITK-8LCGX-2, ITK-8TCGX-2, DT830: Any ITZ model

EVOLUTION

SIP

Evolution diagram — text description

The IFV platform connects private, hosted, hybrid and cloud deployments with SIP trunks and third-party SIP applications, media gateways and session border controllers. Existing SOPHO and SV9500, SV9300 and SV9100 systems can connect through the COMTEL media-gateway evolution model, retaining suitable legacy resources. Compatibility restrictions for terminals are listed above.