How to make dialing to the city through 9'ku PBX with Cisco?

Question

Asterisk

Others, tell me!
Asterisk has the following extension:
exten => _8XXXXXXXXXX,1,Dial(SIP/cisco/${EXTEN})
At the same time, the Cisco 3700 is connected via FXO to an office PBX, in which access to the city is made through 9'ku. How to set up a dial-peer on Cisco so that with such a number it dials 9, waits for a dial tone, and then the number itself?

Answer 1

exten = > _8XXXXXXXXXX,1,Dial(SIP/cisco/${EXTEN},,D(9ww${EXTEN}))