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New Member

1751-V & ATA-186 Incompatibility

Hi There,

I have a VoIP network, of two Cisco 1750-4V, two Cisco 1751-V multiservice routers and two ATA-186 voice gateways.

The communication between any 1750-4V and ATA-186 devices is flawless in both directions. However, when we try to make a call from 1751-V (FXO or FXS port) to the ATA-186, it's impossible. The communication from any ATA-186 to any 1750-4V, the other ATA-186, and any 1751-V (FXO or FXS port) is flawless.

I don't know if a newer version of ATA-186 flash ROM (actually there is 2.07 version) will solve this problem?

I will appreciate any comments.


Igor Sotelo.


Re: 1751-V & ATA-186 Incompatibility

I have a setup in which ATA-186 and 1751-V are interopearting without any issues. My setup is similar to the one in the document

New Member

Re: 1751-V & ATA-186 Incompatibility

Thank you for the information.

We don't use a gatekeeper, and I have the following configuration on both 1751-V (the configuration is the same on the 1750-4V's):

dial-peer voice 5000 voip

.destination-pattern 500.

.session target ipv4:x.y.z.w

where x.y.z.w is a external valid IP address.

On the ATA-186 we have configured:

static IP: x.y.z.w

static net mask:

UID0: 5000

UID1: 5001

and static route: x.y.z.w1

I can ping the devices from the 1751-V without problems, and also call the 1751-V from the ATA. However, I can't call the ATA from the 1751-V.

Do you have idea, of what can be wrong?


Igor Sotelo.

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