Overview Plug-in Modules Specifications Product Photography

SLICE is REDCOM’s self-contained, fully integrated switching system. This highly reliable and versatile system is proven in both strategic and tactical applications with the United States Armed Force.

Depending on the module configuration, a single SLICE provides up to 24 analog line circuits, 4 BRI-S line circuits, and 6 digital spans (E1/T1) with integrated modular jacks (RJ-11, RJ-45). SLICE supports tandem MLPP capability (including ANSI 619a) and advanced conferencing. Easily transportable, SLICE weighs less than 15 pounds (6.5 kg). It is easy to install in standard 19 inch (48 cm) equipment racks, transit cases, or in vehicles.

SLICE is a fully integrated and highly interoperable switching system that can be connected to other network elements by E1/T1, using ISDN PRI or in-band register signaling. Fully scalable, several SLICE units can be connected to maximize network capabilities.

JITC Certified

SLICE•C is available on the DSN Approved Products List (APL) after rigorous testing and certification by the Defense Information Systems Agency’s Joint Interoperability Testing Command (JITC), and is listed on JITC’s APL in the Deployable Voice Exchange (DVX), Private Branch Exchange (PBX) 1, and PBX2 categories (Release 3.0A R3P0).

Real-world Interoperability

The SLICE’s network interfaces, signaling protocols and conversion deliver true, real-world interoperability. SLICE's certification and listing on JITC’s APL offers warfighters a high level of confidence when it comes to the interoperability and information assurance of the SLICE for DoD users operating in a joint environment.

Enhance your Command and Control Capability with ClusterNet™

REDCOM’s ClusterNet technology allows multiple SLICE units to be seamlessly interconnected and function as one integrated system. The SLICE may also be clustered with a REDCOM HDX, SLICE® 2100™ or SLICE® IP for additional features.

Highlighted Features

  • MLPP & 619a Support: Provides end-to-end warfighter communications and ensures priority calls “tandem” and are delivered to the end location.
  • Secure Communications: Using the Secure Device Module, the SLICE can connect with up to 4 SWT voice encryptors (made by General Dynamics C4 Systems). SWT encryptors allow any SLICE line or trunk port to conduct secure voice communications with any SCIP-capable terminal.
  • Secure Conferencing: The SLICE supports several conferencing styles, including “progressive” (participants added one at a time), “meet-me” (participants meet at a valid number at a specified time), and “preset” (conference controller initiates the event, adding participants as they answer).
  • Field Deployable: Housed in REDCOM’s rugged and transportable Tactical Communications Package (TCP), the SLICE can be quickly deployed to tent cities, communications shelters, trucks and Humvees. The SLICE TCP meets stringent DoD specifications for impact and vibration, and can withstand the harsh conditions of airlift, seaborne and off-road transportation. The SLICE TCP integrates multiple communications elements and encryption devices, and can be fully customized to meet the specific needs of warfighters and DoD agencies.

Interchangeable plug-in modules for REDCOM SLICE

The SLICE features two rear-accessible positions for your choice of interface modules, allowing communicators to upgrade and configure each SLICE to meet their specific needs.

12-Port Line Module


12 Loop Lines

DTMF receivers & caller-ID senders & echo cancellers.

  • 24 or 48 volt loop battery (auto-select).
  • Meets both ANSI & ETSI standards.
  • 1900 Ω Loop

2 ISDN BRI-S (2B+D) Lines

  • Meets both ANSI & ETSI standards.

1 Test Access Jack


24-Port Line Module


24 Loop Lines

  • DTMF receivers & caller-ID senders & echo cancellers
  • 24 or 48 volt loop battery (auto-select)
  • Meets both ANSI & ETSI standards
  • 1200/1900 Ω Loop

1 Test Access Jack


Line/Trunk "Magneto" Module


10 Loop/Magneto Lines

  • Software-selected per circuit to operate with magneto phones or magneto switchboards (SB-22 or 3614) or standard phones.
  • DTMF receivers & caller-ID senders & echo cancellers.
  • Features re-ring in normal & variable ring cycles.
  • 24 or 48 volt for loop battery (auto-select).

2 ISDN BRI-S (2B+D) Lines

  • Meets both ANSI & ETSI standards.

2 E&M/SF Trunks

  • Software-selected per module to operate in E&M or SF mode.

2 GSRD/LSRD Trunks

  • Software-selected per module to operate in GSRD or LSRD mode.

Multi-E1/T1 Module


4 E1/T1 Spans, each providing:

  • Software-selectable per span as E1/T1
  • 100 ohm T1 interface or 120 ohm E1 interface via an RJ-45 connector
  • Independent alarm and loopback indicators for each span
  • Software controlled clock synchronization
  • Can be provisioned as a fractional E1/T1
  • 4 general-purpose Digital Signal Processors (DSPs): DTMF, MF/R1, MFC R2, Echo Cancellation
  • Onboard support for Primary Rate

Radio Interface Module


  • Audio Levels: Mic or 600 Ω with additional gain/loss controls
  • Outgoing key methods: PTT, VOX, DTMF, COR,Permanent
  • Incoming key methods: COR or VOX, External PTT
  • Administrable voice delay on transmit (allows for preambles and for scanners to lock to a channel)
  • Half-Duplex or Full Duplex operation
  • Secure Modes of Operation
  • External PTT, Voice and VOX output indicators
  • External Speaker outputs and remote dial-up monitoring (listen only)
  • Provisional tones: new user alert, End of Transmission, End of Reception
  • Echo Cancellers

Secure Device Module


  • Designed to work with Sectéra® Wireline Terminal (Type 1) and TalkSECURE™ (non-Type 1) devices
  • Two HD-26 connectors per module
  • Separate audio and call control data to each secure device
  • Contains four ports designed to interface with up to four secure devices
  • Each port consists of an RS-232 interface and a two-wire audio interface that can be configured as ground or loop start
  • Supports non-secure trunk functionality

SLICE Specifications


  • Height: 1U 1.75 in / 4.4 cm
  • Width: 17.5 in / 44.5 cm
  • Depth: 17 in / 43 cm
  • Weight: Less than 15 lbs / 6.5 kg
  • Mounting: 19" rack mount; wall


  • Conferencing
  • CLASSSM Announcements
  • Signaling: DTMF, MF/R1, MFC R2, ISDN
  • Computer Telephony Integration (CTI)
  • Monitor
  • ClusterNet™
  • Euro ISDN

Government Specific Features:

  • Conferences: Preset, Meet-me, Progressive, Flexible
  • TRI-TAC Networks: MLPP, Red T1
  • Networks: DSN (ANSI 619a), PSTN, E-1, E-1 Priority, R2, ISDN
  • Secure Interoperability: LTU-TED
  • MLPP


  • 36 ccs (1 Erlang) per port (non-blocking)


  • 2 software-selectable E1/T1 digital spans
  • 24 analog line circuits
  • 4 ISDN BRI-S
  • 2 RS-232 10/100 Ethernet ports for administration
  • Dual PCMCIA for program update & database backup


  • - 48 VDC
  • AC power supply (optional)


  • 32°-122° F (0°-50° C) ambient
  • 5%-90% relative humidity (non-condensing)

Product Photography

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