[cisco-voip] ATA 186 question

Lelio Fulgenzi lelio at uoguelph.ca
Thu Jan 27 16:26:16 EST 2022


You might want to double check that. From this, 17.3, it shows 10 is a valid option.

https://www.cisco.com/c/en/us/td/docs/switches/lan/catalyst9300/software/release/17-3/configuration_guide/int_hw/b_173_int_and_hw_9300_cg/configuring_interface_characteristics.html#task_uw1_3wc_g1b

Sent from my iPhone

On Jan 27, 2022, at 3:45 PM, Lisa Notarianni <lisa.notarianni at scranton.edu> wrote:



CAUTION: This email originated from outside of the University of Guelph. Do not click links or open attachments unless you recognize the sender and know the content is safe. If in doubt, forward suspicious emails to IThelp at uoguelph.ca

We just began Cisco switch upgrade to 9300s and ran into an unexpected issue.

We have many ATA 186s out there (about 100) and did not budget for replacement as we were gratefully approved for the massive overhaul of the switches.  This ended up being an unforeseen glitch.

We cannot get the ATA 186s to work on this switch with this IOS version:                               1 65 C9300-48UXM 17.03.04 CAT9K_IOSXE INSTALL
However, the 186s are working on this switch with this IOS version:                                          1 64 C9300-48P 16.9.5 CAT9K_IOSXE INSTALL

I know it is not an apples to apples comparison but I was wondering if anyone had a workaround for the newer model/IOS.

We believe the problem is that the ATA186s are hard coded at 10Mbps/half duplex.  Even if we change the switch port parameter from 0x00000000 to 0x000000ff  the ATA will not register.  The switch port is also configured at duplex auto but the slowest we can make the port is 100Mbps.

Is this not possible?  I am hoping you Cisco geniuses have a solution 😊

Lisa Notarianni
University of Scranton
Telecommunications Engineer
Infrastructure Services
800 Linden St.
Scranton PA 18510
570.941.4325

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