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VG310 and VG320 voice gateways, manufactured and shipped after September 1, 2016, might not function properly if they run Cisco IOS® Software Releases earlier than 15.6(3)M.
A new hardware component was introduced into the manufacturing process on September 1, 2016 for VG310 and VG320 devices, which requires Cisco IOS Software Release 15.6(3)M or later in order to operate properly.
The new hardware revision of the VG310 and VG320 boots up with Cisco IOS Software Releases earlier than 15.6(3)M, but the digital signal processor (DSP) fails to download the necessary firmware which causes voice calls to fail.
Units manufactured September 1, 2016 or after and run a Cisco IOS Software Release earlier than 15.6(3)M might exhibit this behavior:
- The VG310 and VG320 boot up, but voice calls might fail.
- The output of the show voice dsp group all command indicates the status of DSP 1 as "FW_DNLD_FINISHED,".
An example is shown here:
Router#show voice dsp group all
DSP groups on slot 0:
State: FW_DNLD_FINISHED, firmware:
Identify the date of manufacturing of the product as described in the "How to Identify Affected Products" section. If the product was manufactured on or after September 1, 2016, ensure the device runs Cisco IOS Software Release 15.6(3)M or later.
How To Identify Affected Products
There are two ways to identify the affected product:
Option 1: The product manufactured on September 1, 2016 or later has a suffix "P" in the model name. Check the product label located on the back of the chassis for the Model Name: VG310P or VG320P. See this image for an example.
Option 2: Enter the Cisco IOS command show diag and review the Longitudinal Calibration section. The first byte indicates the revision.
- "01" indicates a manufactured date before September 1, 2016.
- "02" or greater indicates a manufactured date of September 1, 2016 or later.
An example is shown here:
VG310 Mother board 2GE, integrated VPN, 24 onboard analog FXS and 1W Port adapter, 26 ports
Port adapter is analyzed
Port adapter insertion time 1d04h ago
MAC Address block size : 72
Manufacturing Test Data : 00 00 00 00 00 00 00 00
Longitudinal Calibration : 02 10 0E 6E 72 0E 0D 83
- The new Cisco IOS software is compatible with both the old and new hardware.
- Platforms with old and new components are completely interoperable.
- Customers with older VG310 and VG320 voice gateways can continue to use any supported software release available on the Cisco software download portal.
- There is no change in features or any other functionality.
For More Information
If you require further assistance, or if you have any further questions regarding this field notice, please contact the Cisco Systems Technical Assistance Center (TAC) by one of the following methods:
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