Cisco AS5300 - Universal Access Server, Software Configuration Manual, Page: 60 / 198

Configuring the D Channels for Modem Signaling
Cisco AS5300 Universal Access Server Software Configuration Guide 3-26
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If dialing cannot occur, check the configuration by entering the debug isdn q931 command.
When you finish viewing the messages, enter no debug isdn q931 to turn off the messages. See
Table 3-15 for explanations of the error messages.
5300# debug isdn q931
%LINEPROTO-5-UPDOWN: Line protocol on Interface Serial1/0:22, changed state to up
ISDN Event: Call to 9086154535 dsl 3 at 64 Kb/s
TX -> SETUP dsl = 3 pd = 8 callref = 0x188C
Bearer Capability i = 0x8890
Channel ID i = 0xE1808397
Called Party Number i = 0xA1, '95163287448'
RX <- RELEASE_COMP dsl = 3 pd = 8 callref = 0x988C
Cause i = 0x83E020 - Mandatory IE missing
ISDN PRI 3: entering process_rxstate, CALL_CLEARED
ISDN PRI 3: received message 1F
ISDN Event: Hangup call to call id 0xCE2 on dsl 2
Table 3-14 Debug Dialer Messages
Message Description
PRI0: No dialer string defined.
Dialing cannot occur
Displayed when a packet is received that should cause a call to be
placed. However, there is no dialer string configured, so dialing
cannot occur. This message usually indicates a configuration
problem. Re-enter the dialer-group command in step 6 in the
“Configure” section.
PRI0: Attempting to dial
xxxxxxxxxx
Indicates that a packet has been received that passes the
dial-on-demand access lists. That packet causes dialing of a phone
number. The xxxxxxxxxx variable is the number being called.
PRI0: Unable to dial xxxxxxxxxx
Displayed if the phone call could not be placed. This can be due to a
lack of memory, full output queues, or other problems.
PRI0: disconnecting call
Displayed when the Cisco AS5300 attempts to hang up a call.
PRI0: idle timeout
PRI0: re-enable timeout
PRI0: wait for carrier timeout
One of these three messages is displayed when their corresponding
dialer timer expires. They are mostly informational, but are useful
when debugging a disconnected call or call failure.
Table 3-15 Debug ISDN Messages
Message Description
TX ->
Indicates this message is being transmitted from the local router (user side) to the network
side of the ISDN interface.
RX <-
Indicates this message is being received by the user side of the ISDN interface from the
network side.
SETUP
Indicates the SETUP message has been sent to initiate call establishment between peer
network layers. The message can be sent from the local router or network.
pd
Indicates the protocol discriminator. The protocol discriminator distinguishes messages for
call control over the user-network ISDN interface from other ITU-T1
1
-defined messages,
including other Q.931 messages. The protocol discriminator is 8 for call control messages
such as SETUP.