[Asterisk-Users] Asterisk Christmas Help request

[Mr Asterisk]

Many thanks in advance for anyone that can offer help on the following
questions:



Asterisk Box
Using Asterisk at Home build and updated Asterisk to v2.1
P4, 400 Mhz, 384Mb RAM, 40Gb HD
4 OEM X100P Cards

Phones
Grandstream GXP-2000
2 * Grandstream BT-100
HandyTone 486
Sipura SPA-3000


Questions

1)
When someone calls in to one of the FXO lines, there is a 3-4 second delay
before the configured internal extension starts ringing. Is there anyway to
reduce this?

2)
Is it possible to make Asterisk behave like a typical office PBX, in so much
as after I press 9, I then get an outside line and hear the TelCo. dial
tone. Is there anyway to make a phone dial without pressing # key? 
(i.e. so it automatically complete the number by itself. I'd like it to act
like a normal PBX, so after press 9, then here an outside dial tone).

3) 
I get a lot of echo and noise distortion when making an external TelCo call.
Some people say they can't hear what I say.

4)
Is it possible to make a routing, as follows
Dial 8 go to Internet Call
Dial 9 go to TelCo. Call

5) 
How do I change the time zone for Asterisk? Currently the system time is
correct but when I dial *60 it reports a different time (out by many hours).

Zapata.conf 

added

;Added by RB
loadzone=th
defaultzone=th
busydetect=yes
callprogress=yes


indications.conf

Changed

[general]
country=th

Added

[th]
description = Thailand
ringcadance = 2000,4000
dial = 400*33
busy = 400/500,0/500
ring = 400/1000,0/4000
congestion = 400/100,0/100,400/100,0/100,400/100,0/100,400/300,0/100
callwaiting = 400/300,0/10000
;These below are made up.
dialrecall =
!350+440/100,!0/100,!350+440/100,!0/100,!350+440/100,!0/100,350+440
record = 1400/500,0/15000
info = !950/330,!1400/330,!1800/330,0