Information Technology Reference
In-Depth Information
If the dialing cause is seen but no attempt is made to dial, the usual reason is a misconfigured dialer map
or dialer profile (Table 17-7).
Table17-7
Call Not Placed
Possible Problem
Suggested Actions
Misconfigured
dialer map
Use the command
show running-config
to ensure that the
dialing interface is configured with at least one
dialer map
statement that points to the protocol address and called number
of the remote site.
Misconfigured
dialer profile
Use the command
show running-config
to ensure that the dialer
interface is configured with a
dialer pool X
command and that a
dialer interface on the router is configured with a matching
dialer pool—member X
. If dialer profiles are not properly
configured, you may see a
debug
message such as “Dialer1:
Can't place call, no dialer pool set.”
Make sure that a dialer string is configured.
Async Outbound Calling—Verify Chat Script Operation
If the outbound call is a modem call, a chat script must execute for the call to proceed. For dialer
map-based DDR, the chat script is invoked by the
modem-script
parameter in a dialer map command.
If the DDR is dialer profile-based, this is accomplished by the command
script dialer,
configured on the
TTY line. Both uses rely on a chat script existing in the router's global configuration, such as this, for
example:
chat-script callout AT OK atdt\T TIMEOUT 60 CONNECT \c
In either event, the command to view the chat script activity is
debug chat
. If the dial string (such as
phone number) used in the
dialer map
or
dialer string
command were 5551212, the debug output would
look like this:
CHAT1: Attempting async line dialer script
CHAT1: Dialing using Modem script: callout & System script: none
CHAT1: process started
CHAT1: Asserting DTR
CHAT1: Chat script callout started
CHAT1: Sending string: AT
CHAT1: Expecting string: OK
CHAT1: Completed match for expect: OK
CHAT1: Sending string: atdt5551212
CHAT1: Expecting string: CONNECT
CHAT1: Completed match for expect: CONNECT
CHAT1: Chat script callout finished,
status = Success
Chat script problems can be broken into three categories:
Configuration error
•
Modem failure
•
Connection failure
•
