How do I change the displayed phone number?

Question

Asterisk

Which variable should be changed to change the displayed number on Ex (SIP phone)
When calling it

[pathtest]
exten => s,1,Set(${CALLERID(name)} = "Popa")
exten => s,n,Set(${CALLERID(num)} = "7977777777")
exten => s, n,Dial(SIP/199,300,Tt))

LOG

- Executing [[email protected]:1] Set("SIP/Multifon-000003bb", "7812X = "Popa"") in new stack
[2016-11-19 22:32:32] WARNING[10630][C-00007699 ]: pbx.c:11555 pbx_builtin_setvar: Please avoid unnecessary spaces on variables as it may lead to unexpected results ('7812X ' set to ' "Popa"').
-- Executing [[email protected]:2] Set("SIP/Multifon-000003bb", "7812X = "Popa"") in new stack
[2016-11-19 22:32:32] WARNING[10630][C- 00007699]: pbx.c:11555 pbx_builtin_setvar: Please avoid unnecessary spaces on variables as it may lead to unexpected results ('7812X ' set to ' "7977777777"').
-- Executing [[email protected]:3] Dial("SIP/Multifon-000003bb", "SIP/199,300,Tt)") in new stack

Generally CallerID(name|num|all) does not work for some reason. The call goes to the trunk, the trunk turns to custom exstentions pathtest. But the original number is displayed

Answer 1

CALLERID(num)