Chapter 7 Configuring and Debugging Fax Services
Debugging the Cisco ATA 186/188 Fax Services
Table
Problem | Action |
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The | Cisco recommends IOS version 12.2 (11)T or higher for the Cisco 2600 |
loaded with correct | and Cisco 3600, and IOS version 12.1 (3)T or higher for Cisco AS5300. |
software image. | The Cisco 6608 supports both the NSE and NTE methods of fax |
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| To use fax |
| 6608 NSE mode, and the NSE payload type must be reconfigured to match |
| the Cisco ATA. |
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The Cisco ATA is not | Cisco recommends using software version 2.14 or higher. |
loaded with the proper |
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software. |
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User is operating | Cisco recommends using Cisco ATA models |
Cisco ATA software on an | |
outdated model. |
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The Cisco ATA is not | For fax mode, the AudioMode configuration parameter should be set to |
configured for fax mode or | 0xXXXX0012 (X = value not applicable) for the Phone 1 port of the |
fax | Cisco ATA, and 0x0012XXXX for the Phone 2 port. |
| For fax |
| for the Phone 1 port of the Cisco ATA, and 0x0015XXXX for the Phone |
| 2 port. |
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The remote gateway is not | When the Cisco ATA is configured for fax |
configured for modem/fax | gateways must be configured with modem/fax |
| on a |
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Fax relay is not disabled | Fax relay is enabled by default on some Cisco gateways. When fax relay |
on the remote gateway. | is enabled, it can override fax |
| Examples of the CLI commands to disable fax relay for IOS gateways are |
| as follows: |
| • fax rate disable for H.323/SIP gateways |
| • mgcp fax t38 inhibit for MGCP gateways |
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Fax/modem | Some Cisco gateways (such as Cisco VG248, and Cisco 6608) may use |
method on the remote | signaling messages based on RFC2833 for G.711 upspeed when loaded |
gateway is not compatible | with older software images. This method is incompatible with the Cisco |
with the Cisco | |
method. | You must check to make sure that the image on your gateway supports the |
| |
| Cisco |
| configure the Cisco ATA to use fax mode. |
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NSE payload types differ | The Cisco ATA has a configurable NSE packet |
between gateways. | default is 100. This value is compatible with the implementations of most |
| Cisco gateways. However, some Cisco gateways use 101 as the NSE |
| payload type. |
| Ensure that all gateways in your environment use the same NSE payload |
| type if you wish to successfully use fax |
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Cisco ATA 186 and Cisco ATA 188 Analog Telephone Adaptor Administrator’s Guide (SIP)
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