Mediant 2000 SIP User’s Manual

I. Release Reason Mapping

Appendix I Release Reason Mapping

Table I-1below describes the mapping of ISDN release reason to SIP response. Table I-2on page 229 describes the mapping of SIP response to ISDN release reason.

Table I-1: Mapping of ISDN Release Reason to SIP Response (continues on pages 227 to 228)

ISDN Release

 

Description

 

SIP

 

Description

 

Reason

 

 

Response

 

 

 

 

 

 

 

 

1

 

Unallocated number

404

 

Not found

2

 

No route to network

404

 

Not found

3

 

No route to destination

404

 

Not found

6

 

Channel unacceptable

*

 

Not acceptable

 

406

 

7

 

Call awarded and being delivered in an

500

 

Server internal error

 

established channel

 

 

 

 

 

 

 

16

 

Normal call clearing

-*

 

BYE

17

 

User busy

486

 

Busy here

18

 

No user responding

408

 

Request timeout

19

 

No answer from the user

480

 

Temporarily unavailable

20

 

Subscriber absent

480

 

Temporarily unavailable

21

 

Call rejected

403

 

Forbidden

22

 

Number changed w/o diagnostic

410

 

Gone

22

 

Number changed with diagnostic

410

 

Gone

23

 

Redirection to new destination

480

 

Temporarily unavailable

26

 

Non-selected user clearing

404

 

Not found

27

 

Destination out of order

502

 

Bad gateway

28

 

Address incomplete

484

 

Address incomplete

29

 

Facility rejected

501

 

Not implemented

30

 

Response to status enquiry

501*

 

Not implemented

31

 

Normal unspecified

480

 

Temporarily unavailable

34

 

No circuit available

503

 

Service unavailable

38

 

Network out of order

503

 

Service unavailable

41

 

Temporary failure

503

 

Service unavailable

42

 

Switching equipment congestion

503

 

Service unavailable

43

 

Access information discarded

502*

 

Bad gateway

44

 

Requested channel not available

503*

 

Service unavailable

47

 

Resource unavailable

503

 

Service unavailable

49

 

QoS unavailable

503*

 

Service unavailable

50

 

Facility not subscribed

503*

 

Service unavailable

55

 

Incoming calls barred within CUG

403

 

Forbidden

57

 

Bearer capability not authorized

403

 

Forbidden

58

 

Bearer capability not presently available

503

 

Service unavailable

63

 

Service/option not available

503*

 

Service unavailable

65

 

Bearer capability not implemented

501

 

Not implemented

*Messages and responses were created since the ‘ISUP to SIP Mapping’ draft doesn’t specify their cause code mapping.

Version 4.4

227

July 2005

Page 227
Image 227
Nortel Networks TP-1610 SIP user manual Appendix I Release Reason Mapping, Description Reason Response