Specifications

6-7
Cisco ATA 186 and Cisco ATA 188 Analog Telephone Adaptor Administrator’s Guide for SCCP (version 3.0)
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Chapter 6 Configuring and Debugging Fax Services
Debugging the Cisco ATA 186/188 Fax Services
Note The AudioMode configuration overrides the values of the following three parameters: RxCodec,
TxCodec, and LBRCodec. For example, if these three parameters are each set to 0 (for G.723), the
Cisco
ATA would still use G.711 if AudioMode is set to 0x00120012. With this configuration, the
Cisco ATA sends both G.711μ-law and G.711A-law as preferred codecs to a peer voice gateway.
Configuring the Cisco IOS Gateway for Fax Mode
On the Cisco gateway, disable both fax relay and fax pass-through at the dial-peer level or system level
with the following commands:
Procedure
Step 1 Run the command:
fax rate disable
Step 2 Run the command:
no modem passthrough
Debugging the Cisco ATA 186/188 Fax Services
This section includes the following debugging topics for fax services:
• Common Problems When Using IOS Gateways, page 6-7
• Using prserv for Diagnosing Fax Problems, page 6-9
• Using rtpcatch for Diagnosing Fax Problems, page 6-12
Common Problems When Using IOS Gateways
Table 6-1 lists typical problems and actions that might solve these problems for situations in which the
Cisco ATA is using fax over a Cisco IOS gateway.