---
title: "Telos VX® Prime Specifications"
slug: "telos-vx-prime-specifications"
updated: 2024-11-04T11:27:17Z
published: 2024-11-04T11:27:17Z
canonical: "docs.telosalliance.com/telos-vx-prime-specifications"
---

> ## Documentation Index
> Fetch the complete documentation index at: https://docs.telosalliance.com/llms.txt
> Use this file to discover all available pages before exploring further.

# Telos VX® Prime Specifications

Specifications for your Telos VX Prime+ VoIP system.

## Analog Inputs (with Telos Alliance xNode)

- Input Impedance: >40 k Ohms, balanced
- Nominal Level Range: Selectable, +4 dBu or -10dBv
- Input Headroom: 20 dB above nominal input

## Analog Outputs (with Telos Alliance xNode)

- Output Source Impedance: <50 Ohms balanced
- Output Load Impedance: 600 Ohms, minimum
- Nominal Output Level: +4 dBu
- Maximum Output Level: +24 dBu

## Digital Audio Inputs and Outputs (with Telos Alliance xNode)

- Reference Level: +4 dBu (-20 dB FSD)
- Impedance: 110 Ohm, balanced (XLR)
- Signal Format: AES-3 (AES/EBU)
- AES-3 Input Compliance: 24-bit with selectable sample rate conversion, 32 kHz to 96kHz input sample rate capable
- AES-3 Output Compliance: 24-bit Digital Reference: Internal (network timebase) or external reference 48 kHz, +/- 2 ppm
- Internal Sampling Rate: 48 kHz
- Output Sample Rate: 44.1 kHz or 48 kHz
- A/D Conversions: 24-bit, Delta-Sigma, 256x oversampling
- D/A Conversions: 24-bit, Delta-Sigma, 256x oversampling
- Latency <3 ms, mic in to monitor out, including network and processor loop

Frequency Response (with Telos Alliance xNode)

- Any input to any output: +0.5 / -0.5 dB, 20 Hz to 20 kHz

Dynamic Range (with Telos Alliance xNode)

- Analog Input to Analog Output: 102 dB referenced to 0 dBFS, 105 dB “A” weighted to 0 dBFS
- Analog Input to Digital Output: 105 dB referenced to 0 dBFS
- Digital Input to Analog Output: 103 dB referenced to 0 dBFS, 106 dB “A” weighted
- Digital Input to Digital Output: 138 dB

Total Harmonic Distortion + Noise (with Telos Alliance xNode)

- Analog Input to Analog Output: <0.008%, 1 kHz, +18 dBu input, +18 dBu output
- Digital Input to Digital Output: <0.0003%, 1 kHz, -20 dBFS
- Digital Input to Analog Output: <0.005%, 1 kHz, -6 dBFS input, +18 dBu output

Crosstalk Isolation, Stereo Separation, and CMRR (with Telos Alliance xNode)

- Analog Line channel to channel isolation: 90 dB isolation minimum, 20 Hz to 20 kHz
- Analog Line Stereo separation: 85 dB isolation minimum, 20 Hz to 20 kHz
- Analog Line Input CMRR: >60 dB, 20 Hz to 20 kHz

IP/Ethernet Connections

- (1) Gigabit Ethernet via RJ-45 LAN connection (AoIP)
- (1) Gigabit Ethernet via RJ-45 WAN connection (VoIP)

Processing Functions

- All processing is performed at 32-bit floating-point resolution
- Send AGC/limiter
- Send filter
- Gated receive AGC
- Receive filter
- Receive dynamic EQ
- Ducker
- Sample rate converter
- Acoustic Echo Canceller

## Power Supply AC Input

- Hot-swap capable dual-redundant internal auto-ranging power supplies. 90 – 132 / 187 – 264 VAC, 50Hz/60Hz. IEC receptacle, internal fuse.
- Power consumption: 100 Watts

Operating Temperatures

- -10 degree C to +40 degree C, <90% humidity, no condensation

## Studio Audio Connections

- Via Livewire IP/Ethernet. Each channel (hybrid) has one input and one output
- Each studio has a Program-on-Hold input
- Each Acoustic Echo Canceller has two inputs (signal and reference) and one output
- Livewire+™ AES67 equipped studios may take and supply audio directly to/from the network. Telos Alliance xNodes are available for analog and AES3 breakout.
- VX supports AES67 connectivity. AES67 stream parameters:
- (2) channels per stream, 1 ms packetization rate
- Sample rate: 48 kHz
- Payload type: 46
- Source port: 5001
- Destination port: configurable
- Time to live (TTL): configurable (1-255)
- IEEE 802.1p priority code point (PCP): configurable (0-7)
- IEEE 802.1Q VLAN tag: configurable (0-4094)
- DiffServ code point (DSCP): configurable (0-63)
- Don’t Frag (DF) bit: configurable (true/false)
- Receive buffer size: configurable (2000-20000 μs)
- VX supports PTPv2 (IEEE 1588-2008) clocking. Domain, sync interval, announce interval, announce timeout, and many other parameters are all configurable.

## Telco Connections

- Audio: standard RTP. Codecs: g.711μ-Law and A-Law, and G.722.
- Control: standard SIP endpoint. ISDN PRI/T-1, ISDN BRI, and POTS may be supported with the appropriate interfaces using an existing PBX or an Asterisk-based PBX optionally configured by Telos Alliance.

## Dimensions and Weight

- Rackmount 1RU hardware platform, rack rails provided
- 1.75” H x 19” W x 15.5” D (44 x 483 x 394 mm)