Cisco ATA188-I2-A Administration Guide - Page 192

Frequently Asked Questions Chapter 9 Troubleshooting Pay attention to the following questions: 1. Can the Cisco ATA detect on/off hook from the analog phone? 2. Can the Cisco ATA detect the DTMF signal? 3. Can you dial the remote side? 4. Can the Cisco ATA ring the phone? 5. Is voice quality satisfactory? If you answer no to any of the above questions, you may have a loop impedance greater than 400 ohm. In this case, perform the following procedure. Procedure Step 1 Step 2 Increase the wire gauge to reduce the impedance until the Cisco ATA can detect on/off hook and DTMF signal. If the Cisco ATA cannot ring the phone, find a phone that can ring at a lower ringing voltage. Also, try to use only one phone instead of multiple phones in parallel. Q. Does the Cisco ATA support an overhead paging system, and, if so, does the Cisco ATA support power denial? A. The Cisco ATA supports an overhead paging system only if that system does not require power denial (battery removal) when a call is disconnected. However, the Cisco ATA can be configured to reverse the voltage polarity when a call is connected or disconnected. For more information, see the "Polarity" section on page 5-39. Q. How do you use NetMeeting to make a direct IP call with a Cisco ATA that is running H.323? A. Follow the steps below: Procedure Step 1 Step 2 Step 3 Step 4 Step 5 From the NetMeeting Tools menu, click Options. Click the Advanced Calling button. Check the Gateway Settings box and enter the IP address of the Cisco ATA. Click OK. Proceed as usual and place your call. Note Always use the configured User ID number when making a new call with NetMeeting. 9-14 Cisco ATA 186 and Cisco ATA 188 Analog Telephone Adaptor Administrator's Guide for H.323 (version 3.0) OL-4804-01