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Tempest Products, Tempest Solutions, TSG Secure Military Communications

TSG Class A Approved Cisco 8851 VoIP Phone with 18/36 Key Expansion Module (KEM)*

Manufacturer: CIS Secure Computing

Product Code: DTD-8851-02

Key Features

  • 5-inch high resolution widescreen VGA color display
  • Supports a built-in 10/100/1000 Ethernet switch for PC connection
  • Compatible with both IEEE 802.3af and 802.3at switch blades
  • Phone supports 10 line appearances through Enhanced Line Mode feature
  • Includes 18/36 Key Expansion Module

Additional Features

  • The speakerphone function is enabled and protected with the TSG on-hook security. It can be administratively disabled via the Unified Communications Manager.
  • The headset port is enabled and protected with the TSG on-hook security. Any 8851 compatible wired headset can be used. Wireless headsets are not approved for use.

The Class A Approved Cisco 8851 Multi-line phone with 18/36 Key Expansion Module included supports Session Initiation Protocol (SIP) for signaling, Session Description Protocol (SDP), IPv4, and IPv6.  The phone is optimized for use with Cisco Unified Communications Manager.  

This TSG Approved VoIP phone with 18/36 Key Expansion Module included is a modified Cisco 8851 version that connects to your network like any other 8851 phone. The difference is the addition of Positive Disconnect On-Hook Security.

Approved for use in SCIF and SAPF environments, the phone also allows the on-hook security features to be engaged while in a call providing enhanced “Hold” and “Mute” security.  Speakerphone functionality is enabled on the device and is protected with the on-hook security of the positive disconnect electronics, but can be administratively disabled in the Unified Communications Manager.

*For customers not requiring KEM, the TSG Class A Approved Cisco 8841 model (DTD-8841-02) provides a more cost effective solution with the identical functionality of the 8851.

Handset and Headset
Wideband handset
Headset port
Optional Push to Talk handset
Optional Push to Mute handset

Full-duplex speakerphone

LAN and PC Ports
2-port Ethernet switch (connects phone and PC over a single line)
LAN Port 10/100/1000Mb RJ45
PC Port 10/100/1000Mb RJ45

10 line keys, soft keys, back and release keys, four-way navigation and select keys, hold/resume, transfer, conference, messaging, application, directory, standard keypad, volume-control toggle, speakerphone, headset, mute

Dimensions (H x W x D)
7.0“ x 15.25” x 7.25”

4.23 lbs.

32 to 104° F (0 to 40° C)
14 to 140° F (-10 to 60° C)

10 to 90% , noncondensing
10 to 95%, noncondensing

Includes power injector required for Class A deployment (DTD-VOIP-PI-02)
Input 100-240 VAC, 50-60Hz
Output 48 VDC, 0.3 amps

Cisco Unified Communications Manager
8.5.1, 8.6.2, 9.1.2, 10.5.2, 11.0 and later

Backlit indicators
Line keys, select key, message waiting, audio path keys (handset, headset, and speakerphone)

Protocol and Standard Support
Session Initiation Protocol (SIP) for signaling, Session Description Protocol (SDP), IPv4 and IPv6, User Datagram Protocol (UDP), Dynamic Host Configuration Protocol (DHCP) client or static configuration, Gratuitous Address Resolution Protocol (GARP), Domain Name System (DNS), Trivial File Transfer Protocol (TFTP), Secure Hypertext Transfer Protocol (HTTPS), VLAN, Real-time Transport Protocol (RTP), Real-time Control Protocol (RTCP), Cisco Peer-to-Peer Distribution Protocol (PPDP), Cisco Discovery Protocol, LLDP (including LLDP-MED), switch speed auto-negotiation

Additional Security features
Secure boot, secure credential storage, device authentication, configuration file authentication and encryption, image authentication, random bit generation, hardware cryptographic acceleration, Certificate Authority Proxy Function (CAPF), Manufacturer-Installed Certificates (MIC), Locally Significant Certificates (LSC), Ethernet 802.1x supplicant options: Extensible Authentication Protocol-Flexible Authentication via Secure Tunneling (EAP-FAST) and Extensible Authentication Protocol-Transport Layer Security (EAP-TLS), signaling authentication and encryption using TLS, media authentication and encryption using SRTP, HTTPS for client and server, Secure Shell (SSH) Protocol server, SSL-based VPN client

The Cisco 8851 requires an Enhanced User Connect License (UCL) in order to connect to the Cisco Unified Communications Manager.  Sold separately.

Standard 1 year parts and labor
Optional 3 year parts and labor

Part Numbers Item Description
DTD-88XX-PTT Push to Talk Handset
DTD-88XX-PTM Push to Mute Handset
DTD-88XX-MR Microphone Removal
DTD-88X1-CFP Colored Face Plate

Product Downloads

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CIS Secure Computing solutions are available directly from CIS, our authorized resellers, and government contracts including GSA, ITES-3H, NETCENTS-2, and SEWP V.