SIP.conf
[itc-tpx-outbound]
type=friend
dtmfmode=auto
host=smartvoice.telepacific.com
fromdomain=smartvoice.telepacific.com
username=9092937640
fromuser=9092937640
secret=password
trustrpid=yes
sendrpid=yes
disallow=all
allow=ulaw
canreinvite=no


dial plan
exten => _NXXXXXXXXX,1,Set(CALLERID(name)=9092937640)
exten => _NXXXXXXXXX,n,Dial(SIP/${EXTEN}@itc-tpx-outbound)
exten => _NXXXXXXXXX,n,Hangup()



SIP debug
    -- Executing [3012082228@npt-agent:1] Set("SIP/2008-0000001f", "CALLERID(name)=9092937640") in new stack
    -- Executing [3012082228@npt-agent:2] Dial("SIP/2008-0000001f", "SIP/3012082228@itc-tpx-outbound") in new stack
  == Using SIP RTP CoS mark 5
Audio is at 16770
Adding codec ulaw to SDP
Adding non-codec 0x1 (telephone-event) to SDP
Reliably Transmitting (no NAT) to 65.60.126.253:5060:
INVITE sip:3012082228@smartvoice.telepacific.com SIP/2.0
Via: SIP/2.0/UDP 50.203.177.34:5060;branch=z9hG4bK16b5e7bb
Max-Forwards: 70
From: "9092937640" <sip:9092937640@smartvoice.telepacific.com>;tag=as450a37ca
To: <sip:3012082228@smartvoice.telepacific.com>
Contact: <sip:9092937640@50.203.177.34:5060>
Call-ID: 207dda7418fb1d7b4f5c4a444611df64@smartvoice.telepacific.com
CSeq: 102 INVITE
User-Agent: Asterisk PBX 16.0.1
Date: Thu, 07 Feb 2019 20:35:04 GMT
Allow: INVITE, ACK, CANCEL, OPTIONS, BYE, REFER, SUBSCRIBE, NOTIFY, INFO, PUBLISH, MESSAGE
Supported: replaces, timer
Remote-Party-ID: "9092937640" <sip:2008@smartvoice.telepacific.com>;party=calling;privacy=off;screen=no
Content-Type: application/sdp
Content-Length: 239

v=0
o=root 291582725 291582725 IN IP4 50.203.177.34
s=Asterisk PBX 16.0.1
c=IN IP4 50.203.177.34
t=0 0
m=audio 16770 RTP/AVP 0 101
a=rtpmap:0 PCMU/8000
a=rtpmap:101 telephone-event/8000
a=fmtp:101 0-16
a=maxptime:150
a=sendrecv

---
    -- Called SIP/3012082228@itc-tpx-outbound

<--- SIP read from UDP:65.60.126.253:5060 --->
SIP/2.0 100 Trying
Via: SIP/2.0/UDP 192.168.15.108:5060;branch=z9hG4bK16b5e7bb
From: "9092937640" <sip:9092937640@smartvoice.telepacific.com>;tag=as450a37ca
To: <sip:3012082228@smartvoice.telepacific.com>
Call-ID: 207dda7418fb1d7b4f5c4a444611df64@smartvoice.telepacific.com
CSeq: 102 INVITE

<------------->
--- (6 headers 0 lines) ---

<--- SIP read from UDP:65.60.126.253:5060 --->
SIP/2.0 604 Does Not Exist Anywhere
Via: SIP/2.0/UDP 192.168.15.108:5060;branch=z9hG4bK16b5e7bb
From: "9092937640" <sip:9092937640@smartvoice.telepacific.com>;tag=as450a37ca
To: <sip:3012082228@smartvoice.telepacific.com>;tag=820362008-1549571704261
Call-ID: 207dda7418fb1d7b4f5c4a444611df64@smartvoice.telepacific.com
CSeq: 102 INVITE
Content-Length: 0

<------------->
--- (7 headers 0 lines) ---
    -- Got SIP response 604 "Does Not Exist Anywhere" back from 65.60.126.253:5060
Transmitting (no NAT) to 65.60.126.253:5060:
ACK sip:3012082228@smartvoice.telepacific.com SIP/2.0
Via: SIP/2.0/UDP 50.203.177.34:5060;branch=z9hG4bK16b5e7bb
Max-Forwards: 70
From: "9092937640" <sip:9092937640@smartvoice.telepacific.com>;tag=as450a37ca
To: <sip:3012082228@smartvoice.telepacific.com>;tag=820362008-1549571704261
Contact: <sip:9092937640@50.203.177.34:5060>
Call-ID: 207dda7418fb1d7b4f5c4a444611df64@smartvoice.telepacific.com
CSeq: 102 ACK
User-Agent: Asterisk PBX 16.0.1
Content-Length: 0


---
  == Everyone is busy/congested at this time (1:0/0/1)
    -- Executing [3012082228@npt-agent:3] Hangup("SIP/2008-0000001f", "") in new stack