# TPI-550B Acterna Communication Analyzer Used

**Additional Features:**

-   Verifies customer services for Voice, Data, and Packet (B and D Channel) services
-   Determines line quality with BER testing (prequalification with LT/NT Emulation Mode)
-   Tests the ISDN network at the 2-wire U interface using 2B1Q line coding, and at the 4-wire S/T interface
-   Testing at these interfaces can include Margin Analysis using selectable dB Loss Pads
-   LEDs indicate vital information for each interface, including Sync, Active and Ready status
-   Optional U-Monitor interface allows bi-directional monitoring of in-service D-Channel signaling messages with storage, on screen LCD display, or RS-232 data port output
-   Emulates the NT1 or the TE (i.e., an ISDN phone), or a combination of the two (NT1/TE)
-   Capable of testing these elements insolation: an important problem-solving feature
-   Pinpoint ISDN problems with AutoSPID. This feature reports and displays the SPIDs, allowing you to select the correct SPID for testing
-   SPID Guess determines the SPID after the 10-digit directory number has been entered
-   Auto Video Test auto-answers and loops both B channels for 128K video calls
-   User-friendly design allows technicians with limited training to do the job quickly and correctly in the shortest possible time
-   Compact, lightweight, and weather-resistant, the TPI-550B goes wherever your testing needs take you

## Details

- **Price:** 0.0 USD
- **Vendor:** Acterna
- **Type:** Comm Ana
- **Tags:** Acterna, Analyzers, Communication, Manufacturers, product_manual_group_1, Product_used

## Variants

| Variant | Price | Available |
|---------|-------|-----------|
| Default Title | 0.00 USD | In stock |

## Images

- TPI-550B Acterna Communication Analyzer Used

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> Source: [ValueTronics](https://valuetronics.com/products/tpi-550b-acterna-communication-analyzer-used)
> Updated: 2026-05-21