Setting call-forward for 3rd party SIP stations on sv8500

[phadobas]

How do you do this?
There is an access code for call-forward all calls - say *5xxxx (where xxxx is the destination of call forward). You can just pick up a standard analog or digital or NEC SIP phone, dial the above code, you get a service set tone, you hang up and call forward is set.
But on a 3rd party SIP phone, dialing is a different story. When I dial the above code, after the dial time-out, I get a fast busy.
What's the trick here?

 

[3racefan3]

Just tried this on SIP phones with no issue. The confirmation tone was a little different but it set just fine.

 

[phadobas]

Thanks for the answer.
Since I posted this question, I got as far as being able to set call forwarding on the phone, but the "confirmation" tone is fast-busy. So this may confuse users. I would like it to work a bit nicer..

 

[neax]

I recall he latest version software in the SV8500 (and SV8300) now provide service set tone when setting CF'ing on STD SIP stations.

 

[phadobas]

That's very useful information since it just so happens that I upgraded the system to S7 (latest version that came out in August), and I didn't know about that. I'll dive right into the manuals.
Thank you for the tip.