Cisco 7911g Sip Firmware

Posted on by

  1. Cisco Cp-7911 Sip Firmware
  2. Cisco 7911g Sip Firmware Version
  3. Cisco 7911g Sip Firmware Download
  4. Cisco 7911g Sip Firmware Download
August 20, 2019

Introduction

In this post we will learn how to upload SIP firmware to Cisco 7911 IP Phone. This will make possible using the phone with third party SIP servers. The instruction below applies to all Cisco 7900 series IP phones.

The Cisco Unified IP Phone 7911G offers numerous important security features plus the choice of IEEE 802.3af Power over Ethernet (PoE), Cisco inline power, or local power through an optional power adaptor (Figure 1). Cisco Unified IP Phone 7911G FEATURES The Cisco Unified IP Phone 7911G is designed to grow with your organization. Re: How to configure 3CX with SPA-3102 and Cisco 7911g phone Great! Get the sip firmware but be careful as Cisco have a habit of charging for firmware lately and also are locking some of their phones down to only work with their system. Dont forget that 3cx is open standards (not to be confused with open source) and so any phone will work.

Step 1. Download the SIP firmware.

Before we start, let’s download the required SIP firmware files.

Cisco 7911g sip firmware

Cisco Cp-7911 Sip Firmware

Go to Cisco Download Page and get the required SIP firmware files. Make sure you download the right SIP firmware for your phone model in a ZIP package. Below is a screenshot showing the 8.5.2 version firmware package for 7911 IP phone.

Step 2. Download TFTP server.

Go to http://tftpd32.jounin.net/tftpd32_download.html and download the TFTPD32 or TFTPD64 server, which is a tiny TFTP server, required to serve the firmware files to the IP phone.

Extract all files from the previously downloaded package to the TFTP directory. The image below shows the content of the TFTP root directory.

Step 3. DHCP server. Option 150

Before we reset the IP phone you we need to configure our DHCP server to provide the IP address of TFTP server to the IP phone. Otherwise, the phone will not know where to download the firmware files from once it boots.

I’m using Cisco switch in my lab and configured very primitive DHCP server like this:

ip dhcp pool TEST
network 10.0.0.0 255.0.0.0
option 150 ip 10.0.0.10

The IP address of my laptop running TFTP server is 10.0.0.10. Option 150 should point to the IP address of TFTP server. You may use any other DHCP server, just make it provides option 150 to your phone.

Step 4. Reset the phone.

Now let’s hard reset the phone:

  1. Unplug the power cable(or Ethernet in case of PoE) from the phone. Hold # and then plug it back in.
  2. Continue to hold # until the message LED on the handset flashes on and off in sequence in red.
  3. Release # and press 123456789*0#

Once the phone boots up it will download the SIP firmware files from the TFTP server and activate the new firmware.

Step 5. Verification

Cisco 7911g Sip Firmware Version

The Menu of the phone running SIP firmware looks a bit different from the phone running SCCP firmware. It will show some new SIP related menu entries. You can find the information about the new firmware on the web interface of the phone which is enabled by default:

Cisco 7911g Sip Firmware Download

Conclusion

Cisco 7911g Sip Firmware Download

Now your Cisco IP phone is ready for use with any third-party SIP server. Thank you for reading 🙂