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by Cisco
Product Line: Cisco Small Business Voice Gateways and ATAs
Product Type: Gateway
Original price $936.00 - Original price $2,939.00
Original price
$936.00 - $2,939.00
Current price $2,939.00
Title: Surplus

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Product Description

The VG310 Cisco features a high-performance processor, 1 GB SDRAM for memory, and 256 MB of flash memory, tailored for efficient processing and storage. It is equipped with two 1-Gbps Ethernet ports for high-speed connectivity and supports Cisco IOS Software Release 15.2(4)M or later, ensuring compatibility with advanced network operating systems. Designed for on-premises deployment, this device offers FXS (RJ-21) interfaces with loop resistance up to 600 Ohms for short loops and 1400 Ohms for long loops, alongside a range of ring frequencies (20, 25, 30, and 50 Hz) to meet diverse telecommunication needs.

Key Feature for the VG310

  • What is the default memory of this networking device?
    The default memory is 1 GB SDRAM.
  • How many Ethernet ports does the device feature?
    It features two 1-Gbps Ethernet ports.
  • Can this device operate with an external UPS?
    Yes, it can operate with an external UPS for redundant power supply.
  • What is the AC input voltage range for this device?
    The AC input voltage range is 100 to 240 VAC Autoranging.
  • What mounting options are available for the device?
    The device is rack- and wall-mountable.
  • What is the operating temperature range?
    The operating temperature range is 0 °C to 40 °C.
  • Is the device compatible with Cisco IOS Software Release 15.2(4)M or later?
    Yes, it is compatible with Cisco IOS Software Release 15.2(4)M or later.
  • What are the on-hook voltage specifications for short-loop-length and long-loop-length ports?
    The on-hook voltage is -44 V for both short-loop-length and long-loop-length ports.
  • What is the maximum noise level produced by the device?
    The maximum noise level is 64 dB.
  • What are the use area restrictions for this device?
    It is for on-premises use only, in a restricted access area, with a permanent ground required.

Product Review

The Cisco VG310 offers a high-performance processor, 1 GB SDRAM, and 256 MB flash memory, catering to demanding network environments. However, its limitation to on-premises use and the requirement for an external UPS for redundant power may restrict its application in more versatile setups. Additionally, with two 1-Gbps Ethernet ports, it supports substantial data throughput, though the maximum noise level of 64 dB might be a consideration for deployment in quieter office settings.


The Cisco VG310 is a high-density voice gateway designed to provide a scalable and flexible solution for managing voice traffic in enterprise networks. It features a high-performance processor that ensures efficient handling of voice data, enabling smooth and reliable voice communication across the network. The device is equipped with 1 GB of SDRAM and 256 MB of flash memory, offering ample space for firmware updates and configurations. Connectivity is facilitated through two 1-Gbps Ethernet ports, allowing for high-speed network connections and efficient data transfer rates. This gateway supports an AC input voltage range from 100 to 240 VAC, auto-ranging, with an AC input current of 0.6 to 1.35 Amps, accommodating various power supplies and ensuring operational flexibility. Furthermore, it operates within a frequency range of 47 to 63 Hz and has a power dissipation of 135 W. For environments requiring continuous uptime, the Cisco VG310 is compatible with an external UPS to provide a redundant power supply, minimizing downtime and ensuring uninterrupted service. The device's dimensions are 17.5 inches in width, 1.75 inches in height, and 13.5 inches in depth, with a weight of 15.2 lbs. It is designed for both rack- and wall-mountable setups, offering versatility in deployment. Operating temperature ranges from 0 °C to 40 °C, with a non-operating temperature range of -40 °C to 70 °C. It can operate in humidity levels from 5% to 95%, ensuring reliability in various environmental conditions. The maximum noise level is 64 dB, making it suitable for deployment in areas where noise levels are a concern. The Cisco VG310 runs on Cisco IOS Software Release 15.2(4)M or later, providing a robust operating system with advanced features for network management and security. It is intended for use in on-premises only, restricted access areas, with a permanent ground required. Key interface specifications include: - FXS (RJ-21) interface type, supporting both short and long loop lengths. - FXS loop resistance up to 600 Ohms for short-loop-length ports and up to 1400 Ohms for long-loop-length ports. - On-hook current of 25 mA for short-loop-length ports and 35 mA for long-loop-length ports. - On-hook voltage of -44 V and ring frequencies of 20, 25, 30, and 50 Hz. These features ensure the Cisco VG310 can accommodate a wide range of voice communication needs, from traditional telephony to advanced VoIP services. Its robust hardware specifications, combined with flexible software capabilities, make it an ideal choice for enterprises looking to integrate or expand their voice communication infrastructure.


Model NumberCisco VG310
CPUHigh-Speed Processor
Memory (RAM)1 GB SDRAM
Storage (Flash)256 MB
Network InterfacesDual 1-Gbps Ethernet Interfaces
Input Voltage (AC)100-240 VAC, Auto-sensing
Input Current (AC)0.6A - 1.35A
Frequency Range47 Hz to 63 Hz
Energy Consumption135 Watts
Power RedundancyExternal Uninterruptible Power Supply
Product Width17.5 inches
Product Height1.75 inches
Product Depth13.5 inches
Product Weight15.2 pounds
Installation OptionsRack-Mount and Wall-Mount
Operational Temperature Range0°C to 40°C
Storage Temperature Range-40°C to 70°C
Humidity Tolerance (Operational)5% to 95% non-condensing
Sound Emission64 decibels
Required SoftwareCisco IOS Software Release 15.2(4)M or newer
Deployment EnvironmentIndoors; controlled access; requires grounding
Connection PortsFXS (RJ-21)
Loop Resistance for FXS PortsUp to 600 Ohms (Short); Up to 1400 Ohms (Long)
Idle Current for FXS Ports25 mA (Short); 35 mA (Long)
Idle Voltage-44 Volts
Ring Signal Frequency20, 25, 30, 50 Hz

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