Miguel

Cause Codes and Debug Values
This chapter contains the following information:
•

Details of Cause Codes and Debug Values for VoIP, page 589

•

Internal Cause Codes for SIP and H.323, page 592

Additional cause code information can be found in the Cisco IOS Debug Command Reference.

Details of Cause Codes and Debug Values for VoIP
Use the following tables when reading debugs and theassociated values within the debugs.

Q.931 Call Disconnection Causes
These are cause codes from the debug voip ccapi inout command.
Call Disconnection Cause Value (in Hex)

Meaning and Number (in Decimal)

CC_CAUSE_UANUM = 0x1

Unassigned number (1)

CC_CAUSE_NO_ROUTE = 0x3

No route to destination (3)

CC_CAUSE_NORM = 0x10

Normal call clearing (16)

CC_CAUSE_BUSY = 0x11User busy (17)

CC_CAUSE_NORS = 0x12

No user response (18)

CC_CAUSE_NOAN = 0x13

No user answer (19)

CC_CAUSE_REJECT = 0x15

Call rejected (21)

CC_CAUSE_INVALID_NUMBER = 0x1C

Invalid number (28)

CC_CAUSE_UNSP = 0x1F

Normal, unspecified (31)

CC_CAUSE_NO_CIRCUIT = 0x22

No circuit (34)

CC_CAUSE_NO_REQ_CIRCUIT = 0x2C

No requested circuit (44)CC_CAUSE_NO_RESOURCE = 0x2F

No resource (47)

CC_CAUSE_NOSV = 0x3F

Service or option not available, or unspecified (63)

Cisco IOS Voice Troubleshooting and Monitoring Guide

589

Details of Cause Codes and Debug Values for VoIP

Codec Negotiation Values
These codec negotiation values are from the debug voip ccapi inout command.
Negotiation Value

Meaning

codec=0x00000001

G711 ULAW 64KPCM

codec=0x00000002

G711 ALAW 64K PCM

codec=0x00000004

G729

codec=0x00000004

G729IETF

codec=0x00000008

G729a

codec=0x00000010

G726r16

codec=0x00000020

G726r24

codec=0x00000040

G726r32

codec=0x00000080

G728

codec=0x00000100

G723r63

codec=0x00000200

G723r53

codec=0x00000400

GSMFR

codec=0x00000800

G729b

codec=0x00001000G729ab

codec=0x00002000

G723ar63

codec=0x00004000

G723ar53

codec=0x00008000

CLEAR_CHANNEL

Cisco IOS Voice Troubleshooting and Monitoring Guide

590

Details of Cause Codes and Debug Values for VoIP

Tone Types
Tone Types

Meaning

CC_TONE_RINGBACK 0x1

Ring tone

CC_TONE_FAX 0x2

Fax tone

CC_TONE_BUSY 0x4

Busy tone

CC_TONE_DIALTONE 0x8

Dial toneCC_TONE_OOS 0x10

Out of service tone

CC_TONE_ADDR_ACK 0x20

Address acknowledgement tone

CC_TONE_DISCONNECT 0x40

Disconnect tone

CC_TONE_OFF_HOOK_NOTICE 0x80

Tone indicating that the phone is
off-hook

CC_TONE_OFF_HOOK_ALERT 0x100

A more urgent version of
CC_TONE_OFF_HOOK_NOTICE

CC_TONE_CUSTOM 0x200

Custom tone—used when you are
specifying a custom toneCC_TONE_NULL 0x0

Null tone

FAX-Rate and VAD Capabilities Values
Values

Meaning

CC_CAP_FAX_NONE 0x1

Fax disabled or not available

CC_CAP_FAX_VOICE 0x2

Voice call

CC_CAP_FAX_144 0x4

14,400 baud

CC_CAP_FAX_96 0x8

9,600 baud

CC_CAP_FAX_72 0x10

7,200 baud

CC_CAP_FAX_48 0x20

4,800 baud

CC_CAP_FAX_24 0x40

2,400 baud

CC_CAP_VAD_OFF 0x1

VAD disabledCC_CAP_VAD_ON 0x2

VAD enabled

Cisco IOS Voice Troubleshooting and Monitoring Guide

591

Internal Cause Codes for SIP and H.323

Internal Cause Codes for SIP and H.323
Each H.323 and SIP standard cause code accurately reflects the nature of the associated internal failure.
This capability makes the H.323 and SIP call control protocols consistent with cause codes that are
generated forcommon problems. For each internal failure, an ITU-T Q.850 release cause code is also
assigned and maps the new standard categories with the Q.850 release cause code and description that
is assigned to each category.
Table 56

H.323 and SIP Standard Category With Corresponding Q.850 Cause Code Information

Standard Category Description

Q.850
Cause
Code

Unallocated
(unassigned)...