1. AAA Usage for IP Telephony with QoS
H. Sinnreich, D. Rawlins, A. Johnston – MCI WorldCom
Stephen Thomas - Transnexus
<draft-sinnreich-aaa-interdomain-sip-qos-osp-00.txt>
<draft-johnston-sip-osp-token-00.txt >
6/30/2019
aaasipqos

2. AAA for Interdomain SIP Call with QoS
Directory
Directory
OSP
OSP
Policy
Server
OSP
Client
OSP
Server
OSP
Client
Policy
Server
Clearinghouse
COPS
COPS
Session
PEP
Session
PEP
SIP
SIP
SIP
SIP
SIP
UAC
SIP
UAS
SIP
Proxy
SIP
UAS
SIP
UAC
Client
Client
RSVP
RSVP
RSVP
RSVP
Host
Edge
Router
Edge
Router
RSVP
Host
SIP Phone
Domain 1
Transit Networks
Domain 1
IP Telephony
Gateway
6/30/2019
aaasipqos

3. Interdomain QoS Enabled Call Flows
OSP Server
Domain 2
1 <AuthReq>
Domain 1 gets authorization
2 <AuthRsp>
3 INVITE
token is carried here
4 Session Progress 183
SIP call setup D1 to D 2
Ringing OK
7 ACK
8 PATH
RSVP setup D1 to D 2
9 RESV
10 RSV-CONF
11 PATH
RSVP setup D2 to D 1
12 RESV
13 RSV-CONF
Call is set up
14 RTP flows are established
15 BYE
SIP BYE D1 to D2 OK
17 PATHTEAR
RSVP PATHTEAR
18 PATHTEAR
19 <UsageInd>
OSP Usage Reporting
21 <UsageInd>
20 <UsageCnf>
22 <UsageCnf>
6/30/2019
aaasipqos

4. Domain of Service Provider
AAA Model for SIP QoS
SIP
UAC
SIP UAS
AAA and Policy
RSVP
Router
Host
Inter-
domain
AAA
IP Comm.
Client
Domain of Service Provider 1a 2a 3a 6a 5a 4a 1p 2p 1r 2r 4r 3r
Directory
6/30/2019
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5. Call Flow Example: Pull Model for QoS Enabled
SIP1
POL1 CH
POL2
GWY
SIP2 R2 R1
1 INVITE
2 REQ OSP
4 <AuthRsp>
3 <AuthReq>
5 DEC
6 INVITE
7 INVITE
19 180
20 180
21 180
28 PATH
29 PATH
30 PATH
31 RESV
33 RESV
32 RESV
34 RESV-CONF
35 RESV-CONF
36 RESV-CONF
37 PATH
39 PATH
38 PATH
40 RESV
41 RESV
42 RESV
43 RESV-CONF
45 RESV-CONF
44 RESV-CONF OK OK OK
25 ACK
26 ACK
27 ACK
Direction 1
Direction 2
RSVP Signaling
Telephony Signaling
SIP Phone
9 REQ LDP
10 DEC
LDP
11 RPT
12 DEC
13 183
17 DEC
15 DEC
16 RPT
18 183
14 REQ LDP
8 183
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6. QoS Enabled Push Policy Call Teardown
6/30/2019
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7. OSP Usage Indication for Accounting
6/30/2019
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