Outbound calls dropping for some calls

[tomquinnta]

I have no issues with incoming calls. But for some of our outgoing calls we get the ACK pending message flashing on the MJ dashboard after the call is answered. After 5 seconds or so the call drops. Up to when the call drops both us (caller) and the receiver can not decipher audio.

Is this something that can be addressed on my end? The router / modem setup is adminstered by Cable MAS - Cozumel, Mexico. Our MJ number is registered as a US based number. The modem model is UBEE U10C022.

When the MJ works we have a seamless call. But we are hitting too many problem numbers.

Appreciate any help available on this issue. Otherwise we are left having to pay for international calling. WHen oneof the problem #'s we call tries to call us back it is OK.

Thanks

Tom