![SpectraLink 8440 Administration Manual Download Page 314](http://html.mh-extra.com/html/spectralink/8440/8440_administration-manual_1343808314.webp)
Spectralink 84-Series Series Wireless Telephones Administration Guide
1725-86984-000_P.docx
September 2016
314
Response
Supported
486 Busy Here
Yes
487 Request Terminated
Yes
488 Not Acceptable Here
Yes
491 Request Pending
No
493 Undecipherable
No
5xx Responses - Server Failure
Supported 5xx SIP Responses
Response
Supported
5-Server Internal Error
Yes
501 Not Implemented
Yes
502 Bad Gateway
No
503 Service Unavailable
No
504 Server Time-out
No
505 Version Not Supported
No
513 Message Too Large
No
6xx Responses - Global Failure
Supported 6xx SIP Responses
Response
Supported
600 Busy Everywhere
No
603 Decline
Yes
604 Does Not Exist Anywhere
No
606 Not Acceptable
No
Hold Implementation
The handset supports two currently accepted means of signaling hold.
The first method, no longer recommended due in part to the RTCP problems associated with it,
is to set
the “c” destination addresses for the media streams in the SDP to zero, for example,
c=0.0.0.0.