Asterisk configuration, cannot find sip.conf

Hi
I currently want to install asterisk at the moment
but i face some problem
i cannot find "sip.conf" under /etc/asterisk/
is there any thing wrong with my installation?

my router is mr3020 v3
Thanks in advance

The modern replacement for chan_ip (asterisk16-chan-sip) would be using pjsip (asterisk16-pjsip) in conjunction with asterisk, you need to install either one or the other (preferably pjsip, this uses a slightly different configuration though).

i see
i follow the instruction in this link to configure the asterisk

so in this pjsip package, i need to edit the pjsip.conf file as in chan in sip.conf?

Yes, you need to edit pjsip.conf - no, it's not the same syntax.

I think the router hasn't enough power to run asterisk.

While not completely impossible (if you're willing to sacrifice basically everything vut asterisk and know what you're doing, wireless drivers, opkg, uhttpd/ luci, etc.), 8 MB flash are indeed very, very hard to make asterisk fit. In practice you need at least 16 MB flash for a basic asterisk installation.

i already exroot my router to add some storage, and i can install asterisk15, and asterisk-chan-sip, but i face some problem.

i cannot to make a call, i dont know why.

i use an app called 'linphone' from my iphone.

here is my conf if anyone interested :
my sip.conf

[general]
transport=udp
bindport=5060
bindaddr=0.0.0.0
nat=yes
language=en
allowguest=no
srvlookup=no
disallow=all
allow=ulaw
allow=alaw
allow=gsm
dateformat=%F %T
alwaysauthreject=yes
localnet=192.168.3.5/255.255.255.0
localnet=127.0.0.0/255.255.255.0
tcpbindaddr=0.0.0.0
tcpenable=yes
jbenable=yes
jbforce=yes
jbmaxsize=250
jbimpl=adaptive
jbtargetextra=40
jblog=no
[200]
user=200
type=friend
secret=200
host=dynamic
qualify=yes
nat=yes
insecure=invite,port
context=from-internal
[201]
user=201
type=friend
secret=201
host=dynamic
qualify=yes
nat=yes
insecure=invite,port
context=from-internal

and my extensions.conf

[globals]
[general]
static=yes
writeprotect=yes
autofallthrough=yes
[default]
;internal extension 200 - rings for 30 seconds
exten => 200,1,Dial(SIP/200,30)
exten => 200,2,Hangup()
;internal extension 201 - rings for 30 seconds
exten => 201,1,Dial(SIP/201,30)
exten => 201,2,Hangup()

as i want to make a simple configuration

thanks in advance