Is it possible to run an ATA186 behind a SpeedTouch 510 ADSL Gateway?
https://www.cisco.com/univercd/cc/td/doc/pcat/ata186.htm here is the spec sheet. I would suggest that you contact your Cisco sales rep for specific interoperability. The reason being that if they do not support your configuration, it may limit your support options. You may also want to look at the following and check your model numbers:
Cisco Systems announces the end of life (EOL) of the Cisco ATA 186 Analog Telephone Adaptor, models ATA186-L-I1 and ATA186-L-I2. The newer models, the Cisco ATA186-I1 and ATA186-I2, will replace them. The last day to order—also known as the end-of-sales (EOS) date—for these adaptors was July 31, 2002.
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