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by Cisco
Product Line: Cisco VG Series
Product Type: Analog Voice Gateway
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Product Description

The VG204XM features a QUICC processor, 256 MB DDR2 RAM for default memory, and 128 MB NAND flash memory, designed to efficiently handle networking tasks. It supports connectivity through two 10/100BASE-T Ethernet ports and offers versatile power options with an AC input voltage range of 100 to 240 VAC Autoranging and a DC input voltage of 12 V. Designed for on-premises deployment, it operates within a temperature range of 0 °C to 40 °C, supports Cisco IOS 15.3(2)T or later, and includes an FXS interface for on-premises connections, with a loop resistance of up to 600 Ohms.

FAQs for the VG204XM

  • What is the default memory capacity of the device?
    The device comes with 256 MB DDR2 RAM.
  • How many Ethernet ports does the Processor Power QUICC include?
    It includes two 10/100BASE-T Ethernet ports.
  • What type of flash memory is equipped in the device?
    The device is equipped with 128 MB NAND flash memory.
  • What AC input voltage range is supported by the Processor Power QUICC?
    It supports an AC input voltage range of 100 to 240 VAC Autoranging.
  • Can the device be mounted on a wall?
    Yes, the device is desktop and wall-mountable.
  • What operating system version does the Processor Power QUICC require?
    It requires Cisco IOS 15.3(2)T or later.
  • What is the operating temperature range for the device?
    The operating temperature range is 0 °C to 40 °C.
  • What is the power dissipation of the Processor Power QUICC?
    The power dissipation is 30 W.
  • What are the physical dimensions of the device?
    The dimensions are 17.5 inches in width, 1.78 inches in height, and 8.13 inches in depth.
  • What maximum noise level does the Processor Power QUICC produce?
    It produces a maximum noise level of 64 dB.

Product Review

The Cisco VG204XM features a QUICC processor, 256 MB DDR2 RAM, and 128 MB NAND flash memory, supporting efficient operation for on-premises connections. With dual 10/100BASE-T Ethernet ports and compatibility with Cisco IOS 15.3(2)T or later, it offers reliable network connectivity and configuration flexibility. However, its maximum noise level of 64 dB and operating temperature range of 0 °C to 40 °C may limit its deployment in environments sensitive to noise and extreme temperatures.


The Cisco VG204XM is designed to cater to the needs of small to medium-sized businesses requiring voice over IP (VoIP) technology. This device integrates voice and data traffic seamlessly, ensuring efficient communication within organizations. Powered by the QUICC processor, the VG204XM is equipped to handle demanding tasks, ensuring smooth and reliable operations. This product comes with 256 MB of DDR2 RAM, providing sufficient memory for processing voice and data packets efficiently. The inclusion of 128 MB of NAND flash memory offers ample space for the operating system and configuration files, facilitating quick boot times and smooth operation. The device features two 10/100BASE-T Ethernet ports, enabling fast and reliable connectivity to the network. Powering the VG204XM is versatile, with an AC input voltage range of 100 to 240 VAC autoranging, accommodating various power supplies without the need for manual switching. It operates within a current draw of 0.5 Amps and a frequency range of 50 to 60 Hz, making it suitable for global use without requiring additional hardware. Despite its capabilities, the device maintains a power dissipation of 30 W, demonstrating efficiency in energy use. For environments requiring DC power, the device also supports a 12 V input. The physical dimensions of the VG204XM, with a width of 17.5 inches, a height of 1.78 inches, and a depth of 8.13 inches, and weighing 2.98 lbs, make it compact and lightweight. This allows for flexibility in deployment, supporting both desktop and wall-mounted configurations. - Operating temperature ranges from 0 °C to 40 °C, ensuring reliability in various environmental conditions. - Non-operating temperature tolerance spans from -30 °C to 65 °C, providing resilience during storage or transportation. - The device can operate in humidity levels from 10% to 85% (non-condensing), accommodating a wide range of atmospheric conditions. The VG204XM operates quietly with a maximum noise level of 64 dB, minimizing distraction in work environments. It runs on Cisco IOS version 15.3(2)T or later, offering advanced features and security updates to keep the network secure and efficient. Key hardware specifications include the FXS interface for on-premises connections, supporting loop resistance up to 600 Ohms. This ensures compatibility with a wide range of telephony equipment. The device can provide an on-hook current of up to 25 mA and an on-hook voltage of -43 V, ensuring reliable operation of connected telephony devices. Additionally, the ring frequency can be set to 20, 25, 30, or 50 Hz, offering flexibility in configuring the device to meet specific operational requirements. The Cisco VG204XM is intended for on-premises use only, requiring a permanent ground connection for safety and reliability. Its comprehensive features and specifications make it a suitable choice for businesses looking to integrate voice and data traffic over a single network infrastructure, providing a scalable and efficient solution for communication needs.


Item Code Cisco VG204XM
Manufacturer Cisco
CPU QUICC Processor
Base Memory 256 MB DDR2
Storage Memory 128 MB NAND Flash
Network Interfaces Dual 10/100BASE-T Ethernet
Power Supply Voltage (AC) Auto-sensing 100 to 240 VAC
AC Power Draw 0.5 Amps
Operational Frequency 50 to 60 Hz
Heat Output 30 W
DC Power Requirement 12 V
Unit Width 17.5 inches
Unit Height 1.78 inches
Unit Depth 8.13 inches
Unit Mass 2.98 pounds
Installation Options Desktop or Wall Mounting
Functional Temperature Range 0 °C to 40 °C
Storage Temperature Range -30 °C to 65 °C
Humidity Tolerance in Operation 10% to 85% non-condensing
Audible Sound Emission 64 dB Maximum
Required Software Version Cisco IOS 15.3(2)T or newer
Installation Site Indoor use, must be earthed
Connection Type FXS for internal links only
FXS Loop Limit Maximum 600 Ohms
Idle Line Current Up to 25 mA
Idle Line Voltage -43 V
Call Signal Frequency 20, 25, 30, 50 Hz Options

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