Receive a $500.00 trade
in value for your old T1 tester
when purchasing an AT-One
Call now (647)233-7353


the most comprehensive
T1, E1 tester in the market
is also touchscreen

AT.One AT.One AT.One

AT-One: T1/E1/Datacom

The AT-One is the ultimate TDM tester T1 and E1 tester designed in 2015 and launched in 2016 for field engineers that are installing, commissioning and troubleshooting T1, E1 links, Synchonization Networks, and Datacom circuits. This instrument, designed and manufactured in Europe by ALBEDO Telecom, is a brand new platform, incorporating the latest available electronics, consequently you will enjoy top performance, high accuracy and, of course, a very competitive price.

Take a look and try this innovative and flexible tool, you will love it after discovering how the latest FPGA can overcome previous limitations in accuracy, space or performance. Honestly, nothing else can really be compared with this outstanding update for T1/E1/Datacom/Jitter/Wander testing.

24h. of operation at FULL bit rate

  • All in one: T1, E1, nx64, Datacom, Jitter, Wander, Frame Relay
  • Double port
  • Pulse Mask
  • RJ45 balanced interfaces
  • New datacom interfaces with CISCO data cables
  • Display 480 x 272 TFT full color touch screen
  • 2xUSB and Ethernet ports
  • High performance
  • Extra rugged while lightweight (1kg)
  • VNC remote control


  • Mobile Operators
  • Digital Voice and Data
  • Jitter measurement
  • Wander Measurement
  • Pulse Mask
  • Synchronization
  • Voice Frequency


  • American T1 installers
  • RoW E1 installers
  • Data Networks
  • Mobile business
  • Fixed line operators
  • T1 datacom Maintenance
  • E1 datacom Maintenance
  • Laboratories and plant
  • Telecom Operator
  • Air Traffic Control
  • Power Utilities
  • Academics and Education
  • GSM, 3G and LTE Synchronization networks
  • Defense links

Ordering Information

AT.One.HH T1 / E1 / Datacom hand-held tester. Battery operated. Dual port E1 and T1 testing, co-directional interface testing, data communications testing; internal, recovered or external clock reference; frequency and received power level measurements; G.821, G.826 and M.2100 performance analysis; round trip delay measurement; defect and anomaly insertion and analysis with graphical display of events; VF analysis; report generation and export. Includes AC / DC adapter, transportation bag and one BNC-BNC patch cable. [REQUIRES: AT.ONE.E1 or AT.ONE.T1 or AT.ONE.DATA]
AT.One.T1 T1 test. ANSI T1.102 1544 kb/s dual port testing including RJ-48 and Bantam connectors. T1 generation and analysis; ANSI T1.403 SF (D4) and ESF frame structures with robbed bit generation and analysis; FDL signaling channel; T1 frame occupation map; Add / drop of T1 time slots to analog and low rate digital interface. Includes two RJ-48 to Bantam adapters.
AT.One.E1 E1 test. ITU-T G.703 2048 kb/s dual port testing including BNC and RJ48 connectors, E1 generation and analysis; ITU-T G.704 frame structure with or without CRC and with or without CAS; CAS ABCD bits generation and analysis; FAS / NFAS analysis; E1 frame occupation map; add / drop of E1 time slots to analog and low rate digital interface.
AT.One.Data Datacom test. DTE / DCE emulation and datacom monitor modes. V24 / V.28 (RS-232) asynchronous and synchronous interfaces, X.21 / V.11 (RS-422), V.35, V.36 (RS-449), EIA-530 and EIA-530A. Datacom cables not included.
AT.One.JW E1 / T1 Jitter / Wander. Peak-to-peak jitter, RMS jitter, max. jitter, jitter hits detection. Configuration of jitter filters. Frequency offset (ppm), frequency drift (ppm/s). Wander metrics (TIE, MTIE, TDEV). Sinusoidal jitter and wander generation. [REQUIRES: AT.ONE.E1 or AT.ONE.T1]
AT.One.Pulse Pulse Mask Analysis. Displays the pulse shape and checks compliance with ITU-T G.703 or ANSI T1.102 masks. Includes eye diagram operation mode and analysis of pulse time and level metrics. [REQUIRES: AT.ONE.E1 or AT.ONE.T1]
AT.VNC.RC Graphical Remote Control. Based on VNC for Windows and Linux. Ethernet/IP remote control that duplicates the tester graphical user interface in a remote computer
AT.SNMP.RC SNMP Remote Control and automation. Based on SNMP protocol allows user to control the tester remotelly using SNMP queries
AT.Wi-Fi.RC Wi.Fi USB. Remote Control wireless interface to be used together with VNC. [REQUIRES: AT.VNC.RC]
AT.One.V.24 V.24/V.28/RS-232 cables. V.24/V.28/RS-232 DTE and DCE interface cables
AT.One.X.21 X.21/V.11 cables. X.21/V.11 DTE and DCE interface cables
AT.One.V.35 V.35 cables. V.35 DTE and DCE interface cables
AT.One.V.36 V.36/RS-449 cables. V.36/RS-449 DTE and DCE interface cables
AT.One.530 EIA-530 / EIA-530A cables. EIA-530 / EIA-530A DTE and DCE interface cables
AT.70 RJ48 to Bananas 1 meter cable
AT.701 RJ48 to Bananas 3 meters cable
AT.81 Codirectional adapter. AT-2048 G.703 E0 64 kbit/s adapter
AT.82 Contradirectional clock adapter. AT-2048 clock adapter for ITU-T G.703 contradirectional and centralized interfaces. [REQUIRES: AT.81]
AT.80 VF adapter. G.711 test, PCM, level and frequency. Balanced 600 ohms impedance
AT.85 RJ48 to Siemens adapter. RJ48 male to DIN41628L
AT.86 Stereo audio adapter. Stereo audio input adapter
AT.90 RJ48 to RJ48 E1 crossover cable
AT.HS Head-Set 3.5mm jack. Integrated headphone and microphone
AT.76 Mini Balun. RJ48 to BNC male, one way. Input adapter
AT.Lipo.Batt Additional LiPo battery
AT.20 Car charger. Power adapter to charge the test unit from car battery
AT.One.Cert Certificate of calibration. Accuracy calibration certificate, executed only when is sold and before its shipment
AT.One.Check Periodical Unit Verification. Includes board test verification (Calibration, Internal Freq., Volt. Port A / B.), test port verification (Ports A / B: unbalanced E1, Port B: balanced / codirectional, VF Port , DTE / DCE Ports) and analog verification (level port A / B, line attenuation, jitter error, pulse mask)
Buy me
AT-One Home