Frequently Asked Questions - Cisco ATA 188 Administrator's Manual

Frequently Asked Questions

Frequently Asked Questions

How can I recover the box if I forgot the password?
Q.
There are two important passwords. One is the UIPassword, which protects access to the Cisco ATA
A.
Web Server interface; the other is the EncryptKey, which protects access to the TFTP configuration file.
If you forget the value for the UIPassword but still have access to TFTP-stored configuration file, you
can modify the UIPassword via TFTP. However, if you are not configuring the Cisco ATA via TFTP, or
if you forget both passwords, the only way you can recover the box is to have physical access to the box
and do a factory reset on the box via the box voice configuration menu interface (Access Code:
FACTRESET#).
Q. What is the maximum distance from which I can drive an analog device with a Cisco ATA?
Table 8-1
A.
Table 8-1
Ring Load (per RJ-11 FXS Port)
5 REN
4 REN
3 REN
2 REN
1 REN
Cisco ATA, however, is not designed for long-distance usage. The simple test is to determine if the
phone or phones that are connected to the Cisco ATA work properly in their environment.
Pay attention to the following questions:
1.
2.
3.
4.
5.
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
Increase the wire gauge to reduce the impedance until the Cisco ATA can detect on/off hook and DTMF
Step 1
signal.
Step 2 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.
Does the Cisco ATA support network address translation (NAT) when it is loaded with an SCCP
Q.
image?
No, NAT is not supported by the Cisco ATA with the SCCP image.
A.
Cisco ATA 186 and Cisco ATA 188 Analog Telephone Adaptor Administrator's Guide (SCCP)
8-6
provides maximum distances for this question.
Ring Loads and Distances
Can the Cisco ATA detect on/off hook from the analog phone?
Can the Cisco ATA detect the DTMF signal?
Can you dial the remote side?
Can the Cisco ATA ring the phone?
Is voice quality satisfactory?
Maximum Distance
200 feet (61 m)
1000 feet (305 m)
1700 feet (518 m)
2500 feet (762 m)
3200 feet (975 m)
Chapter 8 Troubleshooting
OL-3141-01