Linksys SPA9000 Administrator's Manual page 108

Managing Call Forwarding
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When the call forward destination is "vm," the SPA9000 forwards the call to the URL specified in
<Mailbox Deposit URL>.
Following is an example where the station at extension 5034 forwarded the external caller to an external
number 37683104 (the line interface dial plan strips the leading 9):
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Client station replies 302 to SPA9000 (Line 2 private side)
SIP/2.0 302 Moved Temporarily
To: <sip:5034@192.168.0.1:6060>;tag=e7d2be737eb6d185i0
From: External Caller <sip:37683107@matrix.sipura.com>;tag=8eb8e35678762306o3
Call-ID: 8a49e596-c2f05c6@192.168.2.205CSeq: 101 INVITE
Via: SIP/2.0/UDP 192.168.0.1:6060;branch=z9hG4bK-923a6716
Contact: <sip:937683104@192.168.0.1:6060>
Diversion: "User-C" <sip:5034@192.168.0.1:6060>;reason=unconditional
Server: Sipura/SPA841-3.1.4(a0714sec)
Content-Length: 0
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SPA9000 (Line 2 Public Side) Replies 200 to External Caller followed by REFER:
SIP/2.0 200 OK
To: <sip:37683102@matrix.sipura.com>;tag=b47365fa7b1ae0b6i3;ref=5034
From: External Caller <sip:37683107@matrix.sipura.com>;tag=156b2582302c90cao0
Call-ID: 7ed7ede2-64bf63ea@192.168.2.228
CSeq: 102 INVITE
Via: SIP/2.0/UDP matrix.sipura.com:5060;branch=f87169c5-5dd80aa8-a55271cf-e6750b2d-1
Via: SIP/2.0/UDP 192.168.2.228:5060;received=192.168.2.228;branch=z9hG4bK-ef32c1f0
Contact: PBX Line 2 <sip:37683102@192.168.2.205:5061>
Content-Length: 103
Allow: ACK, BYE, CANCEL, INFO, INVITE, NOTIFY, OPTIONS, REFER
Supported: x-sipura
Content-Type: application/sdp
v=0
o=- 74 166 IN IP4 192.168.0.1
s=-
c=IN IP4 0.0.0.0
t=0 0
m=audio 12345 RTP/AVP 0
a=sendonly
...
REFER sip:37683107@192.168.2.228:5060 SIP/2.0
Via: SIP/2.0/UDP 192.168.2.205:5061;branch=z9hG4bK-50d452e
From: <sip:37683102@matrix.sipura.com>;tag=b47365fa7b1ae0b6i3;ref=5034
To: External Caller <sip:37683107@matrix.sipura.com>;tag=156b2582302c90cao0
Referred-By: PBX Line 2 <sip:37683102@matrix.sipura.com>;ref=5034
Call-ID: 7ed7ede2-64bf63ea@192.168.2.228
CSeq: 101 REFER
Max-Forwards: 70
Contact: PBX Line 2 <sip:37683102@192.168.2.205:5061>
Refer-To: <sip:37683104@matrix.sipura.com>
Content-Length: 0
...
When an incoming call from the ITSP is forked to multiple client stations, the SPA9000 does not honor
the 3xx response returned by any of the client stations. If you wish the call to be forwarded to voicemail
or another client station when it is not picked up, you can specify the optional "cfwd=target" syntax in
<Contact List> so that the call is forwarded to the target number if not answered.
Linksys SPA9000 Administrator Guide
4-18
Chapter 4 Configuring SPA9000 Features
Document Version 3.01