Cisco PGW 2200 Softswitch Nortel Release Link
Trunk (RLT) Support Feature Module
Document Release History
Publication Date
Comments
April 30, 2010
Initial release of document.
Feature History
Release
Modification
9.8(1)
The Nortel Release Link Trunk (RLT) Support feature is introduced on the
Cisco PGW 2200 Softswitch software.
This document describes the Nortel Release Link Trunk (RLT) Support feature. The feature is described
in the following sections:
•
Feature Description, page 2
•
Supported Standards, MIBs, and RFCs, page 10
•
Provisioning Tasks, page 10
•
Provisioning Examples, page 11
•
Software Changes for This Feature, page 13
•
Troubleshooting the Feature, page 14
•
Obtaining Documentation and Submitting a Service Request, page 15
•
Glossary, page 15
Americas Headquarters:
Cisco Systems, Inc., 170 West Tasman Drive, San Jose, CA 95134-1706 USA
Cisco PGW 2200 Softswitch Nortel Release Link Trunk (RLT) Support Feature Module
Feature Description
Feature Description
The Nortel RLT Support feature extends the existing RLT mechanism on the
Cisco PGW 2200 Softswitch. It enables the Cisco PGW 2200 Softswitch to release a call when it
receives a SIP REFER message. With this feature, trunk facilities can be optimized because SS7 circuits
are released after call bridging or redirection occurs. Cisco PGW 2200 Softswitch can interwork with
the switches that are configured to accept RLT message sequences as following:
•
Cisco PGW 2200 Softswitch can send out Facility Request (FAR) messages to preceding switches.
•
Cisco PGW 2200 Softswitch can accept Facility Accept (FAA) or Facility Reject (FRJ) responses.
– When FAA is received, Cisco PGW 2200 Softswitch waits for the switch to release the call.
– When FRJ is received, Cisco PGW 2200 Softswitch releases the call. It allows the preceding
switch to bridge the call to the destination.
Note
For more information on the FAR, FAA, and FRJ messages, see the “RLT Messages” section on page 6.
For SIP interoperability, when a SIP BYE is received (for example, the called party terminates the call),
Cisco PGW 2200 Softswitch sends out an ISUP REL message, even if an FAR message has been sent
and no response (FAA or FRJ) has been received. Cisco PGW 2200 Softswitch releases the call if no
response is received within 5 seconds.
The RLT behavior selection is based on the dial plan (A/B number analysis). It is not based on the trunk
group. Calls from the same incoming SS7 trunk group might have different transfer behaviors.
Note
This feature has only been tested on the Cisco PGW 2200 Softswitch for its interworking with Nortel
switches. RLT functionality changes on Nortel switches have potential impact on RLT interworking
between Cisco PGW 2200 Softswitch and Nortel switches. If message interfaces and RLT call flows
have changed, the modification on RLT functionality is required.
Figure 1 shows a typical deployment for this feature. In this deployment, the
Cisco PGW 2200 Softswitch receives the SIP REFER message from the SIP server. It can interwork with
the SS7 switch that is configured to handle RLT messages. The Cisco PGW 2200 Softswitch can send
FAR to the switch and receive FAA or FRJ from the switch.
Typical Deployment for This Feature
Cisco PGW 2200
Softswitch
Cisco IP
Transfer Point
SS7
Switch
Calling Party
TDM Trunk
SS7
SIP
ITP
SIP
Server
MGCP
TDM
Trunk
IP
V
Transferred-to Party
Cisco AS5400
Series Universal Gateway
Cisco PGW 2200 Softswitch Nortel Release Link Trunk (RLT) Support
2
IP
Transferring Party
207493
Figure 1
Cisco PGW 2200 Softswitch Nortel Release Link Trunk (RLT) Support Feature Module
Feature Description
Call Flows
This section provides call flows of basic RLT functionality scenarios.
Figure 2 provides the call flow of the FAA received scenario.
Call Flow of FAA Received
SS7 Switch
PGW
SIP Server
IAM
INVITE
180 Ringing
ACM
200 OK
ANM
ACK
REFER
FAR
202 Accepted
Notify
active
200 OK
FAA
REL
BYE
200 OK
RLC
278331
Figure 2
Cisco PGW 2200 Softswitch Nortel Release Link Trunk (RLT) Support
3
Cisco PGW 2200 Softswitch Nortel Release Link Trunk (RLT) Support Feature Module
Feature Description
Figure 3 provides the call flow of the FRJ received scenario. If the FAR message is rejected by the
switch, Cisco PGW 2200 Softswitch clears the call by sending a REL message to the switch (cause code:
Normal Call Clearing).
Figure 3
Call Flow of FRJ Received
SS7 Switch
PGW
SIP Server
IAM
INVITE
180 Ringing
ACM
200 OK
ANM
ACK
REFER
FAR
202 Accepted
Notify
active
200 OK
FRJ
REL
200 OK
278332
RLC
BYE
Cisco PGW 2200 Softswitch Nortel Release Link Trunk (RLT) Support
4
Cisco PGW 2200 Softswitch Nortel Release Link Trunk (RLT) Support Feature Module
Feature Description
Figure 4 provides the call flow of the no response received scenario. If the Cisco PGW 2200 Softswitch
has not received any response when the timer expires, it sends a REL message (to the SS7 side) or a BYE
message (to the SIP side) and releases the line.
Call Flow of No Response Received
SS7 Switch
PGW
SIP Server
IAM
INVITE
180 Ringing
ACM
200 OK
ANM
ACK
REFER
FAR
202 Accepted
Notify
active
200 OK
Module
REL
RLC
Time Expiry
BYE
200 OK
278333
Figure 4
Cisco PGW 2200 Softswitch Nortel Release Link Trunk (RLT) Support
5
Cisco PGW 2200 Softswitch Nortel Release Link Trunk (RLT) Support Feature Module
Feature Description
RLT Messages
This section describes the messages that Cisco PGW 2200 Softswitch handles with the RLT
functionality.
Facility Request Message
The Cisco PGW 2200 Softswitch sends an FAR message to the switch to request the activation of a
facility. All parameters and fields of FAR message are hard-coded, except Calling and Called Party
Number Length, Odd/Even indicator, and Address signals. After sending an FAR message, the
Cisco PGW 2200 Softswitch waits for an FAA or FRJ response.
If both Calling Party Number and Charge Number are present in an IAM message, the Charge Number
is used. Cisco PGW 2200 Softswitch sends it back in the Calling Party Number parameter of the FAR.
If either number is present, that number is used as the Calling Party Number parameter in the FAR. If
neither number is present, no Calling Party Number parameter is sent in the FAR.
The values of following Calling Party Number parameters of FAR are copied from either Charge Number
or Calling Party Number:
•
Nature of Address (NOA)
•
Numbering Plan Indicator (NPI)
•
Presentation/Screening Indicators
Table 1 provides the definition of the FAR message.
Table 1
FAR Message Definition
Parameter Name
Type
Length
Description
1
1 byte
Identifies the type of ISUP message.
Message Type
F
Facility Indicator
F
1 byte
Contains information that defines and controls RLT
billing.
Called Party
Number
O2
3–14 bytes
Contains the Called Party Number that arrives in the
Refer-To header of SIP REFER message.
Calling Party
Number
O
4–14 bytes
Contains the Calling Party Number that arrives in the
initial IAM.
Operator
Information
O
14 bytes
Contains information about the answering agent.
1. F = Fixed-length parameters (mandatory).
2. O = Fixed or variable length parameters (optional).
Cisco PGW 2200 Softswitch Nortel Release Link Trunk (RLT) Support
6
Cisco PGW 2200 Softswitch Nortel Release Link Trunk (RLT) Support Feature Module
Feature Description
Table 2 provides an example of the FAR message that the Cisco PGW 2200 Softswitch sends out.
Table 2
FAR Message Example
Type
Hex
Binary
Message Information
F
1F
00011111
Message Type
Facility Request Message (FAR)
F
11
00010001
Facility Indicator Parameter Field
Release link for operator redirect
V
01
00000001
Pointer to start of optional part
1 octet
O
70
01110000
Operator Information Parameter
O
04
00000100
LI of Operator Information Parameter
4 octets
O
0F
00001111
Operator Number
O
27
00
Reorigination Type
100111
Operator Number
The originator receives a dial tone 9999
O
14
0
0010100 OPR
None
O
00
0
0000000 TAC
No request
O
0A
00001010
Calling Party Number Parameter
O
07
00000111
LI of Calling Party Number Parameter
Entry code
Station paid, operator-assisted
Trouble indicator
None
7 octets
O
O
03
14
0
0001
0000011 Odd/Even indicator
0100
Nature of Address indicator
Even
National (significant) number
Numbering Plan
Presentation/Screen indicators
ISDN (Telephony) numbering plan Presentation restricted/user
provided, not screened
O
O
O
O
O
O
75
24
47
63
76
04
0111
0010
0100
0110
0111
0101
0100
0111
0011
0110
00000100
Address signal
Address signal
7
5
Address signal
Address signal
2
4
Address signal
Address signal
4
7
Address signal
Address signal
6
3
Address signal
Address signal
7
6
Called Party Number Parameter
Cisco PGW 2200 Softswitch Nortel Release Link Trunk (RLT) Support
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Cisco PGW 2200 Softswitch Nortel Release Link Trunk (RLT) Support Feature Module
Feature Description
Table 2
FAR Message Example (continued)
Type
Hex
Binary
Message Information
O
07
00000111
LI of Called Party Number Parameter
7 octets
O
O
03
10
0000011 Odd/Even indicator
0
0001
0000
Nature of Address indicator
Even
National (significant) number
Numbering Plan
Reserved
ISDN (Telephony) numbering plan
O
O
O
O
O
O
75
43
58
63
49
00
0111
0101
0100
0011
0101
1000
0110
0011
0100
1001
00000000
Address signal
Address signal
7
5
Address signal
Address signal
4
3
Address signal
Address signal
5
8
Address signal
Address signal
6
3
Address signal
Address signal
4
9
End Of Optional Parameters Fields Indicator Parameter
Facility Accept Message
The switch sends an FAA message to the Cisco PGW 2200 Softswitch in response to an FAR message.
This message indicates that the switch has invoked the requested facility.
Table 3 provides the definition of the FAA message.
Table 3
FAA Message Definition
Parameter Name
Type
Length
Description
1
1 byte
Identifies the type of ISUP message.
Message Type
F
Facility Indicator
F
1 byte
Contains information that defines and controls RLT
billing.
Call Reference
O2
8 bytes
Contains circuit-independent information that identifies
a particular call. Includes the call identity and the point
code of the switch for the call.
Generic Digits
O
4–136 bytes
Contains information about a supplementary service in
the form of digits. Defines the type of digits it contains
and includes encoding method indicators.
1. F = Fixed-length parameters (mandatory).
2. O = Fixed or variable length parameters (optional).
Cisco PGW 2200 Softswitch Nortel Release Link Trunk (RLT) Support
8
Cisco PGW 2200 Softswitch Nortel Release Link Trunk (RLT) Support Feature Module
Feature Description
Facility Reject Message
The switch sends an FRJ message forward to the Cisco PGW 2200 Softswitch in response to an FAR
message. This message indicates that the switch could not perform the facility request.
Table 4 provides the definition of the FRJ message.
Table 4
FRJ Message Definition
Parameter Name
Type
Length
Description
1
1 byte
Identifies the type of ISUP message.
Message Type
F
Facility Indicator
F
1 byte
Contains information that defines and controls RLT
billing.
Cause Indicator
V2
3 bytes
Provides the coding standard, location, and cause value
for the call. Indicates why a switch could not perform
the action that an FAR message requested. Identifies
the network that originated the message.
1. F = Fixed-length parameters (mandatory).
2. V = Variable-length parameters (mandatory).
Benefits
This feature provides the following benefits:
When it is determined that the preceding switch can be used to bridge the call to the destination,
•
Frees ISUP trunks and increases traffic handling capacity.
•
Saves resources on the Cisco PGW 2200 Softswitch and media gateway.
Prerequisites
The Cisco PGW 2200 Softswitch must be running software Release 9.8(1). Prerequisites for this release
can be found in Release Notes for the Cisco PGW 2200 Softswitch Release 9.8(1) at:
http://www.cisco.com/en/US/docs/voice_ip_comm/pgw/9/release/note/rn981.html
Restrictions or Limitations
The Nortel RLT Support feature has the following limitations:
•
Nortel RLT functionality only supports SS7 to SIP call scenario and ANSISS7_STANDARD
variant. For non Ansi-SS7 to SIP call scenarios, Cisco PGW 2200 Softswitch releases the call for
error handling.
•
Cisco PGW 2200 Softswitch does not support receiving FAR on both originating and terminating
Ansi-SS7 side. It does not support receiving FAA and FRJ on terminating Ansi-SS7 side. When the
unexpected messages are received, Cisco PGW 2200 Softswitch ignores them without any response.
•
Cisco PGW 2200 Softswitch can only interwork with the switches that support the RLT
functionality.
Cisco PGW 2200 Softswitch Nortel Release Link Trunk (RLT) Support
9
Cisco PGW 2200 Softswitch Nortel Release Link Trunk (RLT) Support Feature Module
Provisioning Tasks
Related Documents
This document contains information that is strictly related to this feature. The documents that contain
additional information related to the Cisco PGW 2200 Softswitch can be found at:
http://www.cisco.com/en/US/products/hw/vcallcon/ps2027/tsd_products_support_series_home.html
Supported Standards, MIBs, and RFCs
This section identifies the new or modified standards, MIBs, and RFCs that are supported by this feature.
Standards
This feature uses the following standards as references:
•
Digital Switching Systems UCS DMS-250 SS7 RLT Feature Application Guide, 297-2621-345
MIBs
No new or modified MIBs are supported by this feature.
For more information on the MIBs used in the Cisco PGW 2200 Softswitch, see
Cisco PGW 2200 Softswitch MIBs at:
http://www.cisco.com/iam/PGW_MIBS/index.html
RFCs
This feature is in compliance with the following RFC:
•
RFC 3261 (SIP: Session Initiation Protocol)
Provisioning Tasks
This section describes provisioning tasks for this feature.
To use this feature, you need to perform the following main tasks:
•
Provisioning Trunk Groups
•
Provisioning Specific Property to the Trunk Group
•
Provisioning the FACILITY Result Type
For the complete provisioning examples, see the “Provisioning Examples” section on page 11.
Provisioning Trunk Groups
Use the following Man-Machine Language (MML) commands to provision trunk groups of different
types:
•
SIP
prov-add:trnkgrp:name="1000",clli="sip-path",svc="sip-path",type="IP_SIP",
selseq="LIDL",qable="N"
•
SS7
prov-add:trnkgrp:name="3000",type="TDM_ISUP",svc="ss7svc1",selseq="CASC",qable="N"
Cisco PGW 2200 Softswitch Nortel Release Link Trunk (RLT) Support
10
Cisco PGW 2200 Softswitch Nortel Release Link Trunk (RLT) Support Feature Module
Provisioning Examples
Provisioning Specific Property to the Trunk Group
The RltPrefixLength property is specific to the Nortel RLT functionality. It specifies the number of
prefix digits to be removed from the RLT redirection number. The redirection number is got from
Refer-To header of the SIP REFER message. After prefix removal, the new redirection number is sent
in called party number parameter of FAR message to ISUP side.
Use the following command to configure the trunk group property RltPrefixLength:
prov-ed:trnkgrpprop:name="3000",rltprefixlength="5"
Provisioning the FACILITY Result Type
To enable RLT functionality, use the following MML command to provision the FACILITY result type:
numan-add:resulttable:custgrpid="T002",name="fac-1",resulttype="FACILITY",dw1="3",dw2="7",
setname="rs-CSPS-1"
Provisioning Examples
This section provides a provisioning example for this feature. Additional provisioning examples for the
Cisco PGW 2200 Softswitch can be found in Cisco PGW 2200 Softswitch Release 9.8 Provisioning
Guide. Additional dial plan examples for the Cisco PGW 2200 Softswitch can be found in
Cisco PGW 2200 Softswitch Release 9.8 Dial Plan Guide.
________________________________________
; Start a New Provisioning Session
;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
prov-sta::srcver="new",dstver="rlt-prov"
________________________________________
; Add a new dialplan named "T002"
;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
numan-add:dialplan:custgrpid="T002",overdec="YES"
________________________________________
; Add OPC, DPC, and External Nodes (ITP)
;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
prov-add:opc:name="opc1",desc="Own Point code",netaddr="1.1.1",netind=2,type="trueopc"
prov-add:dpc:name="dpc1",desc="M3UA",netaddr="1.4.4",netind=2
prov-add:extnode:name="sh-2651-322",desc="sh-2651-322",type="ITP",isdnsigtype="N/A",
group=1
prov-add:sgp:name="m3ua-sgp1",extnode="sh-2651-322"
________________________________________
;Add an SS7 Signaling Path
;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
prov-add:m3uaroute:name="m3uarte1",desc="m3uarte1",opc="opc1",dpc="dpc1",
extnode="sh-2651-322",PRI=1
prov-add:m3uakey:name="m3uakey1",desc="m3uakey1",opc="opc1",dpc="dpc1",routingcontext=12,
si="ISUP",networkappearance=1
prov-add:ss7path:name="ss7svc1",desc="To Other Side PGW SS7",
mdo="ANSISS7_STANDARD",custgrpid="T002",side="network",dpc="dpc1",m3uakey="m3uakey1"
prov-add:association:name="m3ua-assoc1",sgp="m3ua-sgp1",type="M3UA",ipaddr1="IP_Addr1",
port=2905,peeraddr1="10.0.90.23",peerport=2905,rcvwin=18000,maxinitretrans=10,
maxinitrto=2000,maxretrans=5,cumsackto=300,bundleto=100,minrto=300,maxrto=3000,hbto=2000,
ipprecedence="ROUTINE",dscp="AF31",maxretransdest=3
Cisco PGW 2200 Softswitch Nortel Release Link Trunk (RLT) Support
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Cisco PGW 2200 Softswitch Nortel Release Link Trunk (RLT) Support Feature Module
Provisioning Examples
________________________________________
; Add an External Node (AS5400)
;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
prov-add:extnode:name="sh-5400-308",desc="sh-5400-308",type="AS5400",isdnsigtype="N/A",
group=0
prov-add:mgcppath:name="mgcp5400-308",desc="Service to sh-5400-308",extnode="sh-5400-308"
prov-add:iplnk:name="iplink5400-308-1",desc="MGCP link-1 to AS-5400-308",
svc="mgcp5400-308",ipaddr="IP_Addr1",port=2427,peeraddr="10.0.94.9",peerport=2427,pri=1
________________________________________
; Add an SS7 Trunk Group
;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
prov-add:trnkgrp:name="3000",type="TDM_ISUP",svc="ss7svc1",selseq="CASC",qable="N"
________________________________________
; Provision the Trunk Group Property rltprefixlength
;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
prov-ed:trnkgrpprop:name="3000",rltprefixlength="5"
________________________________________
; Add Trunks and Route List
;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
prov-add:switchtrnk:name="1",trnkgrpnum="3000",span="ffff",cic=1,cu="sh-5400-308",
endpoint="s7/ds1-6/[email protected]",spansize=31
prov-add:rttrnkgrp:name="3000",type=1
prov-add:rttrnk:weightedTG="OFF",name="RT-OTHER-PGW-SS7",trnkgrpnum=3000
prov-add:rtlist:name="RTLIST-OTHER-PGW-SS7",rtname="RT-OTHER-PGW-SS7",distrib="OFF"
________________________________________
; Add a SIP Signaling Path
;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
prov-add:sippath:name="sip-path",desc="SIP path",mdo="IETF_SIP"
prov-add:siplnk:name="sip-link",desc="SIP link",svc="sip-path",ipaddr="Virtual_IP_Addr1",
port=5060,pri=1
prov-add:trnkgrp:name="0001",clli="sipin-path",svc="sip-path",type="SIP_IN",selseq="LIDL",
qable="N",default=1
prov-add:profile:name="pf-1",type="SIPPROFILE",custgrpid="T002",mgcdomain="10.0.242.133"
prov-add:trnkgrpprof:name="1",profile="pf-1"
________________________________________
; Add SIP Trunk Groups
;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
prov-add:trnkgrp:name="1000",clli="sip-path",svc="sip-path",type="IP_SIP",selseq="LIDL",
qable="N"
prov-ed:trnkgrpprop:name="1000",custgrpid="T002",MGCdomain="10.0.242.133"
prov-add:siprttrnkgrp:name="1000",url="10.0.1.233",srvrr=0,sipproxyport=5060,
version="2.0",cutthrough=1,extsupport=1
prov-add:rttrnk:weightedTG="OFF",name="rt1000",trnkgrpnum=1000
prov-add:rtlist:name="rtlist1000",rtname="rt1000",distrib="OFF"
________________________________________
; Dial plan routing to SS7 side
;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
numan-add:resultset:custgrpid="T002",name="rs-ss7-pgw"
numan-add:resulttable:custgrpid="T002",setname="rs-ss7-pgw",name="cut30",
resulttype="BMODDIG",dw1="1",dw2="2"
numan-add:resulttable:custgrpid="T002",name="route-ss7-pgw",resulttype="ROUTE",
dw1="RTLIST-OTHER-PGW-SS7",setname="rs-ss7-pgw"
numan-add:bdigtree:custgrpid="T002",callside="originating",digitstring="30",
setname="rs-ss7-pgw"
________________________________________
; Dial plan routing to SIP side
;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
Cisco PGW 2200 Softswitch Nortel Release Link Trunk (RLT) Support
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Cisco PGW 2200 Softswitch Nortel Release Link Trunk (RLT) Support Feature Module
Software Changes for This Feature
numan-add:resultset:custgrpid="T002",name="rs-CSPS-1"
numan-add:resulttable:custgrpid="T002",name="fac-1",resulttype="FACILITY",dw1="3",dw2="7",
setname="rs-CSPS-1"
numan-add:resulttable:custgrpid="T002",setname="rs-CSPS-1",name="cut10",
resulttype="BMODDIG",dw1="1",dw2="2"
numan-add:resulttable:custgrpid="T002",name="route",resulttype="ROUTE",dw1="rtlist1000",
setname="rs-CSPS-1"
numan-add:bdigtree:custgrpid="T002",callside="originating",digitstring="10",
setname="rs-CSPS-1"
________________________________________
; Save the Provisioning Session
;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
prov-dply
Software Changes for This Feature
The following sections contain software changes related to this feature:
•
Properties, page 13
•
Result Type Definitions, page 13
Properties
This section describes new and modified properties for this feature. For more information on the other
properties, see Cisco PGW 2200 Softswitch Release 9 MML Command Reference.
New Properties
Table 5 describes the new properties for this feature.
Table 5
New Properties for the Nortel RLT Support Feature
Property
Description
*.RltPrefixLength
Length of the prefix to be removed from the RLT redirection number before
the number is sent to ISUP side. Valid value must be larger than 0. Value of
0 means no redirection number manipulation is enabled. If the value is larger
than or equal to the total length of the redirection number,
Cisco PGW 2200 Softswitch automatically ignores this configuration.
Value Range: 0–255.
Default value: 0.
Result Type Definitions
This section describes the new and modified result types for this feature. For information on other result
types, see Cisco PGW 2200 Softswitch Release 9.8 Dial Plan Guide.
Cisco PGW 2200 Softswitch Nortel Release Link Trunk (RLT) Support
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Cisco PGW 2200 Softswitch Nortel Release Link Trunk (RLT) Support Feature Module
Troubleshooting the Feature
Modified Result Type Definitions
Table 6 describes the modified result types for this feature.
Modified Result Type Definitions
Dataword3
Dataword4
FACILITY
Type
Treatment
0 (not used)
0 (not used) —
—
Pre-analysis
Dataword2
Cause
Dataword1
End Point
Result Type
Result Type
Valid For
B-digit analysis
7
Intermediate
Result Number
Analysis
Points
A-digit analysis
Table 6
X
X —
X
The following paragraphs contain definitions of the result type listed in Table 6.
FACILITY
The FACILITY result type is modified for this feature. A new value 7 for Dataword2 is introduced. You
must use the dw1=3 and dw2=7 combinations to enable RLT function on the
Cisco PGW 2200 Softswitch. For other data words combinations and their usages, see
Cisco PGW 2200 Softswitch Release 9.8 Dial Plan Guide.
The Nortel RLT Support feature introduces the following new data word value:
•
Treatment (dw2)—This dataword provides the actions required based on the Type dataword value
(dw1). Valid values are 1–7. The Nortel RLT Support feature introduces the new value 7 for dw2
(Treatment) in software Release 9.8(1) S9P9.
For more information on the FACILITY result type, see Cisco PGW 2200 Softswitch Release 9.8
Dial Plan Guide.
Note
Troubleshooting the Feature
This section provides the troubleshooting solutions for this feature.
•
Step 1
The RLT functionality does not work as expected.
Action
Description
Check the FACILITY
result type.
Ensure that you have provisioned the result type FACILITY for the dial plan.
The dw1=3 and dw2=7 combination of FACILITY result type enables RLT
function on the Cisco PGW 2200 Softswitch.
For result type details, see the “Result Type Definitions” section on page 13.
Step 2
Check the
Ensure that you have provisioned the ANSISS7_STANDARD variant for
ANSISS7_STANDARD SS7 signaling path. For MML command details, see the “Provisioning
variant.
Examples” section on page 11.
Cisco PGW 2200 Softswitch Nortel Release Link Trunk (RLT) Support
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Cisco PGW 2200 Softswitch Nortel Release Link Trunk (RLT) Support Feature Module
Obtaining Documentation and Submitting a Service Request
Obtaining Documentation and Submitting a Service Request
For information on obtaining documentation, submitting a service request, and gathering additional
information, see the monthly What’s New in Cisco Product Documentation, which also lists all new and
revised Cisco technical documentation, at:
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Glossary
Table 7
Acronym Expansions
Acronym
Expansion
FAA
Facility Accept
FAR
Facility Request
FRJ
Facility Reject
ISUP
ISDN User Part
MML
Man-Machine Language
NOA
Nature of Address
NPI
Numbering Plan Indicator
PGW
PSTN Gateway
RLT
Release Link Trunk
SIP
Session Initiation Protocol
SS7
Signaling System 7
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Cisco PGW 2200 Softswitch Nortel Release Link Trunk (RLT) Support
15
Cisco PGW 2200 Softswitch Nortel Release Link Trunk (RLT) Support Feature Module
Glossary
Cisco PGW 2200 Softswitch Nortel Release Link Trunk (RLT) Support
16