We just started replacing our PM3's with TC1000 boxes. The problem we are having, is when I get the box setup at two seperate locations, the T1's come up and everything looks great, however when you call the box you get nothing but dead air (basically a modem isn't answering). This has happened in two locations, one that is served off a GTD-5 and one is served off a DMS-10. In working with the telco on the DMS-10 switch, we discovered that is the circuit is set to send the digits from the call (caller ID), AND I set the option on the HiperDSP to 'Ack Wink On Dial Address Info' a modem will then answer. Does anyone know if there is a way we could work around this without having the telco change things? Here is how the PM3 is configured followed by my options set in the TC1000 box: PM3 Configuration ---------------------- line0 - T1 Inband DS0 --------------- Status: UP Framing: D4 Encoding: AMI PCM: u-law Signaling: Trunk E&M wink start TC1000 Configuration Framing Mode dsx1D4 Line Coding Options dsx1AMI Circuit Identifier Loopback Configuration dsx1NoLoop Signal Mode robbedBit Transmit Clock Source loopTiming NIC Type longHaul Response to Remote Loopback ignore Jitter Attenuation attenJitterOnRcvr Transmit Line Build Out dB0pt0 Dial In Address dnis Dial In/Out Trunk Start Signal Type wink Ack Wink On Dial In Address Info Receive Disabled Dial Out Address Delay 70 Dial In/Out Trunk Type eAndMTypeII Primary Switch Type priSw5ESS Idle Byte Pattern 254 Receiver Gain dB26 Tone Type dtmf Number of DTMF Tones 4 Send Code dsx1SendNoCode External Signaling Mode (will take effect next boot) none Overlap Receiving Mode disable Overlap Receiving Inbound Digits Expected 12 Overlap Receiving Timeout Delay 12 This is how it is set when we get 'dead air' when calling into the box. In order to get an answer the telco must configure for digits to be sent and as mentioned before, we must enable the ack wink on dial in address info. Here is the config we have on the GTD-5 switch for the PM3's and then followed by the TC1000 box. We get the same problem as we do with the DMS-10, just dead air. I have not worked with the telco on this problem so I don't know if a similiar work around might help but note that the circuits served off the GTD-5 are loop start and not wink. PM3 Config ---------------------- line0 - T1 Inband DS0 --------------- Status: UP Framing: D4 Encoding: AMI PCM: u-law Signaling: FXS loop start TC1000 Config Framing Mode dsx1D4 Line Coding Options dsx1AMI Circuit Identifier Loopback Configuration dsx1NoLoop Signal Mode robbedBit Transmit Clock Source loopTiming NIC Type longHaul Response to Remote Loopback ignore Jitter Attenuation attenJitterOnRcvr Transmit Line Build Out dB0pt0 Dial In Address dnis Dial In/Out Trunk Start Signal Type wink Ack Wink On Dial In Address Info Received disabled Dial Out Address Delay 70 Dial In/Out Trunk Type loopStart Primary Switch Type priSw5ESS Idle Byte Pattern 254 Receiver Gain dB26 Tone Type dtmf Number of DTMF Tones 4 Send Code dsx1SendNoCode External Signaling Mode (will take effect next boot) none Overlap Receiving Mode disable Overlap Receiving Inbound Digits Expected 12 Overlap Receiving Timeout Delay 12 Thank you in advance for any advice you may have.