Cisco Systems ATA 188 Debugging the Cisco ATA 186/188 Fax Services, no modem passthrough, Problem

Chapter 6 Configuring and Debugging Fax Services

Debugging the Cisco ATA 186/188 Fax Services

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 6-8

•Using rtpcatch for Diagnosing Fax Problems, page 6-12

Common Problems When Using IOS Gateways

Table 6-1lists typical problems and actions that might solve these problems for situations in which the Cisco ATA is using fax over a Cisco IOS gateway.

Table 6-1 Solving Common Fax Problems

Problem	Action
The far-end gateway is not	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
	pass-through mode, beginning with software version
	D004030145S16608. To use fax pass-through mode with the Cisco 6608,
	the user must select 6608 NSE mode, and the NSE payload type must be
	reconfigured to match the Cisco ATA.
The Cisco IOS gateway is	Perform these steps:
not configured using the	1. Enter the following CLI commands:
external T1 clock.
	Controller T1 0
	clock source line
	2. On the Cisco CallManager Gateway Configuration page, choose the
	T1 line connection port. Set the clock as “external primary.”

Cisco ATA 186 and Cisco ATA 188 Analog Telephone Adaptor Administrator’s Guide for MGCP (version 3.0)

OL-4803-01 6-7