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Appendix E      ISDN BRI Cause Values
65 0041 Bearer capability not 
implemented.The network cannot provide the bearer 
capability (BC) requested by the user.
66 0042 Channel type not 
implemented.The network or the destination 
equipment does not support the requested 
channel type.
69 0045 Requested facility not 
implemented.The remote equipment does not support 
the requested supplementary service.
70 0046 Only restricted digital 
information bearer is 
available.The network is unable to provide 
unrestricted digital information BC.
79 004F Service or option not 
available, unspecified.The network or remote equipment is 
unable to provide the requested service 
option for an unspecified reason. This 
might be a subscription problem.
81 0051 Invalid call reference value. The remote equipment received a call 
with a call reference that is not currently 
in use on the user-network interface.
82 0052 Identified channel does not 
exist.The receiving equipment is requested to 
use a channel that is not activated on the 
interface for calls.
83 0053 A suspended call exists but 
this call identity does not.The network received a call resume 
request. The call resume request 
contained a Call Identify information 
element that indicates that the call 
identity is being used for a suspended 
call.
84 0054 Call identity in use. The network received a call resume 
request. The call resume request 
contained a Call Identify information 
element that indicates that it is in use for 
a suspended call.
Table E-1 ISDN BRI Cause Values and Cause Messages (continued)
Cause Value1Hex Value2Cause Message Definition 
						

							 
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85 0055 No call suspended. The network received a call resume 
request when there was not a suspended 
call pending. This might be a transient 
error that will be resolved by successive 
call retries.
86 0056 Call having requested call 
identity has been cleared.The network received a call resume 
request. The call resume request 
contained a Call Identity information 
element, which once indicated a 
suspended call. However, the suspended 
call was cleared either by timeout or by 
the remote user.
88 0058 Incompatible destination. Indicates that an attempt was made to 
connect to non-ISDN equipment, such as 
an analog line.
91 005B Invalid transit network 
specified.The ISDN exchange was asked to route 
the call through an unrecognized 
intermediate network.
95 005F Invalid  message,  unspecified. An invalid message was received, and no 
standard cause applies. This is usually 
due to a D-channel error. If this error 
occurs systematically, report it to your 
telephone service provider.
96 0060 Mandatory information 
element is missing.The receiving equipment received a 
message that did not include one of the 
mandatory information elements. This is 
usually due to a D-channel error. If this 
error occurs systematically, report it to 
your telephone service provider.
Table E-1 ISDN BRI Cause Values and Cause Messages (continued)
Cause Value1Hex Value2Cause Message Definition 
						

							 
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Appendix E      ISDN BRI Cause Values
97 0061 Message type nonexistent or 
not implemented.The receiving equipment received an 
unrecognized message, either because 
the message type was invalid or because 
the message type was valid but not 
supported. Cause 97 is due to either a 
problem with the remote configuration or 
a problem with the local D channel.
98 0062 Message incompatible with 
call state or message type 
nonexistent.The remote equipment received an 
invalid message, and no standard cause 
applies. Cause 98 is due to a D-channel 
error. If this error occurs systematically, 
report it to your telephone service 
provider.
99 0063 Information element 
nonexistent or not 
implemented.The remote equipment received a 
message that includes information 
elements, which were not recognized. 
This is usually due to a D-channel error. 
If this error occurs systematically, report 
it to your telephone service provider.
100 0064 Invalid information element 
contents.The remote equipment received a 
message that includes invalid 
information in the information element. 
This is usually due to a D-channel error.
101 0065 Message not compatible with 
call state.The remote equipment received an 
unexpected message that does not 
correspond to the current state of the 
connection. This is usually due to a 
D-channel error.
102 0066 Recovery on timer expiry. An error-handling (recovery) procedure 
was initiated by a timer expiration. This 
is usually a temporary problem.
111 006F Protocol error, unspecified. An unspecified D-channel error when no 
other standard cause applies.
Table E-1 ISDN BRI Cause Values and Cause Messages (continued)
Cause Value1Hex Value2Cause Message Definition 
						

							 
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127 007F Interworking, unspecified. An event occurred, but the network does 
not provide causes for the action that it 
takes. The precise problem is unknown.
UNKNOWN N/A Unknown or local error. An event occurred, but the network does 
not provide causes for the action that it 
takes. The precise problem is unknown.
1. Cause value is shown in decimal format.
2. Hex value = hexadecimal translation of the decimal cause value.
3. CCITT = Consultative Committee for International Telegraph and Telephone.
Table E-1 ISDN BRI Cause Values and Cause Messages (continued)
Cause Value1Hex Value2Cause Message Definition 
						

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INDEX
Symbols
? commandA-6
Numerics
5ESS custom switchD-4, D-8, D-13
A
AAL1-13
AAL3/41-13
AAL51-13
AAL5MUXPPP encapsulation configuration 
example
7-12
AAL5SNAP encapsulation configuration 
example
7-11, 7-15
abbreviating commandsA-9
access lists
configuring
7-34 to 7-35
for UDP broadcasts control3-27
IP traffic3-30
network access restrictions3-31
session filtering1-25
ACK bits1-25
activating the POTS dial feature6-20
addressing, configuring7-22 to 7-33
Address Resolution Protocol
See ARP
ADSL
benefits of
4-3, 4-5
network connections with4-3, 4-5
ordering4-9, 7-2
overview1-4
Alcatel 1000 bridge, replacing4-9 to 4-12
ARP1-6
associating the policy map with the ATM PVC 
and using TCP MSS adjust
7-42
Asymmetric Digital Line Subscriber Line
See ADSL
ATM
configuring the ATM interface
4-15
errors, displaying9-11
events, displaying9-12
interface
configuration scenario
4-22
configuring7-9
network example4-23 to 4-24
overview1-12
packets, displaying9-13
PVC encapsulation types1-13 
						

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queues1-22
troubleshooting commands9-6 to 9-14
ATM adaptation layer
See AAL
ATM interface
See ATM
ATM OAM F5 continuity check support, 
configuring
8-44
audience, userxxviii
authentication protocols
See PPP authentication protocols
B
basic calls, making6-13
basic telephone service
See POTS dial peer
b flash command
B-7
boot commandsB-7
bootstrap program
See ROM monitor
bridge, replacing
4-9 to 4-12
bridging
configuration example
7-15
configuring7-13 to 7-17
broadcast intervals, RIP1-8
broadcasts, UDP3-24, 3-27
C
call1-19
caller ID devices6-12
caller ID on the Cisco 813 router6-65
call forwarding for Net3 switch6-48
calling between telephone ports6-53
call leg, defining a1-19
call transfer6-57
call transferring6-17
call waiting6-15, D-2
CAPI
default settings
5-5
features5-2
overview5-1
RVS-COM5-2
supported applications5-4
supported B channel protocols5-3
supported D channel protocols5-4
CAR
configuring, configuration example
8-36
description1-23
caution, describedxxx
CBWFQ1-21
CD-ROM, documentationxxxiii
Central RADIUS Server, configuring4-61
Challenge Handshake Authentication Protocol
See CHAP
CHAP 
						

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Index
configuring2-9 to 2-33, 3-12
description1-10 to 1-11
recommanded protocol3-5
Cisco 800 series and Cisco SOHO series 
routers, overview
1-2
Cisco 831 router VPN connections4-5
Cisco documentationxxxiii
Cisco Easy VPN Client, configuring8-49
Cisco IOS software documentation, 
accessing
xxxiii
class-based weighted fair queuing
See CBWFQ
command(s)
copy running-config startup-config
A-10
debug atm errors9-11
debug atm events9-12
debug atm packet9-13 to 9-14
destination-pattern1-19
flowcontrolA-2
ip precedence7-37
num-exp7-76
permit1-25
port1-19
session target1-19
show atm interface9-9
show dialplan number7-76
show num-exp7-76
command conventionsxxx
command-line interface access to router, 
configuring
7-13 to 7-14
command modesA-3 to A-6
commands
abbreviating
A-9
ATM troubleshooting9-6 to 9-14
bootB-7
completingA-6
confregB-11
contextB-15
copy tftp flashB-7
debug ATM9-10 to 9-14
devB-7
dir deviceB-7
finding availableA-6
frameB-15
help withA-6
iB-7
isdn spid1D-12
isdn spid2D-12
isdn switch-typeD-13
kB-14
meminfoB-16
privileged EXEC, accessingA-7
redisplayingA-7
resetB-7
ROM monitorB-5 to B-7
ROM monitor debuggingB-14 to B-16
stackB-14
sysretB-15
tftpdnldB-7 
						

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undoingA-9
xmodemB-13
command variables
listing
A-7
TFTP downloadB-7
committed access rate
See CAR
Common Application Programming Interface
See CAPI
common applications
6-69
configuration
before configuring
2-1
caller ID6-47
caller ID for the Net3 switch6-47
call forwarding method6-49
call forwarding service6-49
CHAP2-26, 3-12
CLIR6-51
feature by feature7-1, 8-1
PIAFS6-70
prefix filter6-53
prefix number6-52
private IP network to Internet2-3 to 2-12
private IP network to Internet and corporate 
network
3-3 to 3-12
public IP network to Internet2-12
RCAPI5-5
remote network to corporate network2-22
remote network to two corporate 
networks
3-12
subaddresses for POTS ports6-62
configuration changes
making
A-8
saving9-59, A-10
configuration examples
AAL5MUX PPP encapsulation
7-12
AAL5SNAP encapusulation7-11
command-line interface access7-13
DHCP relay7-32
DHCP server7-31
dynamic routing7-19
IP EIGRP7-21
IP Precedence7-73
multilink PPP fragmentation and 
interleaving
7-71
NAT7-23
PPP over ATM with NAT4-19, 4-23 to 4-24
replacing a bridge or modem4-9 to 4-12
static route7-17
configuration register
changing
9-56 to 9-57
changing from ROM monitorB-11
value, resetting9-59
configuring
access list and voice class
7-41
addressing parameters7-22 to 7-33
ATM interface7-9
bridging7-13 to 7-17
command-line interface access7-13 to 7-14
DHCP relay7-31 to 7-33 
						

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Index
DHCP server7-30
dial backup4-24, 7-53 to 7-58
dialer interface7-6
dial-on-demand routing for PPPoE 
client
8-52
dial peers7-74
dynamic routing7-14 to 7-20
Easy IP (Phase 1)7-24 to 7-26
Easy IP (Phase 2)7-26 to 7-33
EIGRP, IP7-20 to 7-21
Ethernet interface4-21, 4-57, 7-4
extended access list7-34
global parameters7-4
H.3237-74 to 7-76
interleaving7-72
IP EIGRP7-20 to 7-21
IP parameters7-63
IP Precedence7-72 to 7-73
local call forwarding6-66
loopback interface7-7 to 7-9
multilink PPP fragmentation and 
interleaving
7-72
multiple-PVC environment7-48 to 7-53
NAT4-23
network, preparing for4-9
policy map and specifying voice 
queuing
7-42
POTS dial peers7-74
RIP7-19
router from PCA-2
single-PVC environment using PPP over 
ATM and multilink 
encapsulation
7-44 to 7-47
single-PVC environment using RFC 1483 
encapsulation
7-40 to 7-44
static routing7-17
See also configuration examples
confreg command
B-11
connection authentication
See PPP
connections
network, illustrated
4-2
setting up7-3
console downloadB-12 to B-14
context commandB-15
conventions, commandxxx
copy running-config startup-config 
command
A-10
copy tftp flash commandB-7
corporate network, connecting to7-3
cross-over functionality1-4
customer servicexxxiii
D
data over voice bearer service6-9
DDR
configuring
2-5, 3-20
description2-5, 2-14, 2-23
DDR ISDN line activation3-26 
						

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debug ATM commands9-10 to 9-14
debug atm errors command9-11
debug atm events command9-12
debug atm packet command9-13 to 9-14
debug commands, ROM monitorB-14 to B-16, 
B-18
debug message
cause values
6-26
CSM events6-25
CSM states6-23
formats6-22
debug POTS commands6-51
default settings, RCAPI5-5
destination-pattern command1-19
dev commandB-7
DHCP
configuring DHCP server
4-56
IP address assignment4-56
DHCP and Easy IP (Phase 2)1-17
DHCP relay
configuration example
7-32
configuring3-25, 7-31 to 7-33
illustrated7-27
DHCP server
configuration example
7-31
configuring2-5, 3-11 to 3-18
configuring routers as7-26 to 7-31
description3-5
illustrated7-27
DHCP server import, configuring8-14
dial backup
configuration example
4-31 to 4-54
configuring4-24
configuring dial backup and remote 
management
4-28, 4-48
dialer watch4-26
floating static routes4-25
dialer interfaces4-21, 7-6 to 7-12
dial-on-demand routing for PPPoE client, 
configuring
8-53
dial peers
configuring
7-74
creating2-11, 6-4
overview1-19
diaster recovery
with console download of Cisco IOS 
software
B-16
with TFTP downloadB-7
differentiating between data and voice 
packets
7-41
digital signal processor
See DSP
dir device command
B-7
disaster recoveryB-7 to B-10
disconnecting a POTS call6-21
distinctive ringing
based on caller ID
6-59
description6-11
scenarios6-60
DMS-100 custom switchD-5, D-9, D-14
documentation, Ciscoxxxiii