• For government, military, and commercial power users.
    End Instrument
  • TLS and SRTP encryption, IPv4 and IPv6 protocols.
    Meets the
    of the DoD
  • 8030X Button Expansion Module
    SIP Compliant,
    Field Tested

The IP Phone 4101 features a full-duplex speakerphone, a 100-entry call log, 7 feature/speed dial keys, a dedicated headset port and control button, a 12-entry call directory, and a built-in 10/100 Base-T Ethernet switch.

Department of Defense (DoD) Unified Capabilities (UC) Approved Products List (APL) approval of the Teo Technologies 78xx, 4104, and 4101 Release xx.04.21, Tracking Number (TN) 1310601, as a voice only, non-secure Assured Services Session Initiation Protocol (AS-SIP) End Instrument (AEI) has been granted.

You can view the approval document here.


Bright Backlit Display

2-line x 16-character backlit display.

Single-line Operation

No line keys.

7 Programmable Keys

Speed dial/feature/DSS.

21 Fixed Function Buttons

Hold, Mute, Conference, Transfer, etc.

Message Indicator

Bright Message Waiting indicator.


Full-duplex speakerphone with muting.


User-selectable ringtone per line.

Call Log with Speed Dial

100-entry call log with integrated speed dialing.

Call Directory

36-entry call directory with integrated speed dialing.

Headset Port

Dedicated headset port and control button.

Ethernet Interface

Built-in 10/100 Base-T Ethernet switch with PC port.

Hard Key Functions

Log, Directory, Info, Voicemail, Speaker, Mute, Headset, Volume-Up/Down, Call Forward, Do Not Disturb.



Headset options are available from other manufacturers.


Standards Compliance

  • FCC Part 15
  • Hearing Aid Compatible
  • CE Listed
  • SIP Standard (IETF RFC3261+)
  • QoS (IEEE 802.1q VLAN tagging, DSCP)

DoD Compliance

  • Assured Services SIP (AS-SIP)
  • Multi-Level Precedence & Preemption (MLPP)
  • Secure Real-time Transport Protocol (SRTP)
  • Transport Layer Security (TLS)
  • Hypertext Transfer Protocol Secure (HTTPS)
  • IPv4/IPv6 dual stack

Network Compatibility

  • 10BaseT and 100BaseT Ethernet
  • Codecs: G.711, G.722, G.729a

Power Requirements

  • Local Power: 6 VDC nominal @ 1 A max.
  • Power over Ethernet: 802.3af Class 2


  • Dimensions: 4.2" H x 8" W x 7" D, excluding handset
  • Weight: 1.8 lbs., including stand and handset


  • Operating Temperature: 32° to 104° F (0° to 40° C)
  • Storage Temperature: 32° to 122° F (0° to 50° C)
  • Humidity: 5% to 95% non-condensing

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