Calltransfer on different extension

I want to transfer incoming call to phones context on same server, earlier I was transferring call to other server with below syntax and same was working fine.

same => n,Dial(SIP/,Tt)

now I tried this : same => n,Dial(SIP//400001,Tt)

I have written code for 400001 under [phones] context
exten =>400001,1,Background(AConnectingAdvisor)
exten =>400001,n,queue(support)
exten =>400001,n,Hangup()




Thanks for very quick response I am new in asterisk but hope with the help for you guys will be champ in few years.hhahha

PRI is plugged on serverA so I have taken call on serverB through this command:
exten => 6656520,1,Dial(SIP/${EXTEN},To)

call directly route under phones context and then I take via different-diffrent logics & context to finally a context

exten => s,1,Answer()
same => n,Dial(SIP/,Tt)

and then want to transfer 400001

many many thanks issue resolved…thanks a lot working fine