- Prerequesites
- CVP Call Server, Operation Console and Media Server Installation
- CVP Component Configuration
- CVP VXML Server
Prerequesites
- The CVP server hostname should not contain any hyphen
- Arrange for CVP license
- Regional and language options should be set to English
- Text services and input languags options should be set to English (United States) - US
- Only one Ethernet connection should be active on the CVP machine
- Install Network Monitor Tools, Simple Network Management Protocol, WMI SNMP Probe Provider, and WMI Windows Installer Provider
CVP Call Server, Operation Console and Media Server Installation
In our laboratory deployment, CVP Call Server, Operation Console and Media Server are collocated on the same machine.
Follow the screen shots below to complete the installation
- Select the options that you want to install
- Add the name and other related information
- Enable the services automatically after the installation is done
- For this lab installation support tools are disabled but in real installation, they are highly recommended and desired
CVP Component Configuration
There are several components that needs to be configured before CVP can operate properly. They are
- CVP Medial Server Configuration
- CVP Call Server Configuration
This document is not including CUPS (For SIP Proxy functionality), TTS and VXML Server.
CVP Media Server Configuration
This setup used Microsoft IIS as the web server to host the media files.
- Enable read permission to the directory where .wav files are saved.
Make sure anynymous access is enabled and the built-in IIS User is assigned.
CVP Call Server Configuration
Before configuring CVP call server, it should be important to know little bit about the setup and SIP call flows. In this setup since we are not using CUPS, we will use Call Flow Model#1. Notice that these call flows are valid for Type 10 VRU only. Also notice that cid is actually correlation id that is a numerical value.
Call Flow Model#1 without CUPS
PSTN Originated Calls
CUCCE Pilot Number Caller dials 541-764-1400 from PSTN
Processing at Ingress GW Ingress gateway sends this call to CVP Call Server
Processing at CVP CVP will send the call to CUICM via a static SIP route as a new route request
Routing Client CVP is the routing client
Label Returned to CVP by CUICM 541-764-1401+cid
Processing at CVP CVP Call Server sends this label 541-764-1401+cid to VXML-GW
Processing at VXML-GW VXML-GW has an incoming dial-peer configured that invokes the bootstrap tcl service. Now a sequence of VXML communications happen between the VXML GW and CVP IVR Service
This communication happens via MicroAppas.
Processing at CVP At this point CVP sends the same label 541-764-1401+cid to CUICM
Processing at CUICM If agent is available then CUICM sends a new label which is basically the Agent’s IP Phone extension to CVP to informs thatVXML-GW resources are engaged
Processing at CVP CVP has a static SIP route configured that would send call to agent’s ip phone
CUCM Originated Calls
CUCCE Pilot Number IP Phone caller dials CTI route point number 541-764-3000
Routing Client CUCM is the routing client
Label Returned to CUCM by CUICM 541-764-1402+cid
Processing at CUCM CUCM receives ths label and send the call to CVP Call Server
Processing at CVP CVP receives this label and send it to CUICM as a new route-request.
Routing Client Notice that now CVP is the routing-client and controls the Call States. CUCM is out from the picture.
Processing at CUICM CUICM receives its own generated label again and knows that loop is complete. And then generates a new label 541-764-1401+cid and sends to CVP
Processing at CVP Call Server send this label 541-764-1401+cid to VXML-GW
Processing at VXML-GW VXML-GW has an incoming dial-peer configured that basically invokes the bootstrap tcl service
Now a sequence of VXML communications happen between the VXML GW and CVP IVR Service.
This communication is called MicroAppas.
Processing at CVP At this point CVP sends the same label 541-764-1401+cid to CUICM to inform thatVXML-GW resources are engaged
So once you understand the high level overview of the call flow, it will be easy to understand the static routes that needs to be added to CVP Call Server.
Local SIP Static Routes in CVP
5417641400
CUICM: 192.168.93.130
Route request to CUICM
91919191
VXML-GW:192.168.93.1
To play ringtone
92929292
VXML-GW:192.168.93.1
To play error tone
5417641401
VXML-GW:192.168.93.1
Label+cid sent to VXML-GW to invoke bootstrap service
5417644…
CUCM:192.168.93.100
For CVP to dial agent ip phone extension
CVP Operation Console Server
CVP Operation Console Server provides web based front end to configure different components in CVP environment.
CVP Call Server General Settings
CVP Call Server ICM Configuration
CVP Call Server SIP Configuration
Default information was used and no fields were modified in the following picture
CVP Call Server Local SIP Static Routes
VXML and Ingress Gateway Configuration
In this setup, same router is used as an ingress as well as VXML gateway. Notice that due to VXML compatibility issues, all Cisco IOS versions are not approved. In this lab setup c3725-adventerprisek9-mz.124-15.T1.bin is used.
Copy following files to VXML Gateway flash memory
bootstrap.tcl
bootstrap.vxml
cvperror.tcl
CVPSelfService.tcl
CVPSelfServiceBootstrap.vxml
survivability.tcl
handoff.tcl
ringtone.tcl
recovery.vxml
holdmusic.wav
ringback.wav
pleasewait.wav
critical_error.wav
en_0.wav
Configuration
cvp-vxml-gw#sh run
!
hostname cvp-vxml-gw
boot system flash flash:c3725-adventerprisek9-mz.124-15.T1.bin
enable password lab
ip cef
!
voice service voip
allow-connections h323 to h323
allow-connections h323 to sip
allow-connections sip to h323
allow-connections sip to sip
signaling forward unconditional
h323
emptycapability
h225 id-passthru
h245 passthru tcsnonstd-passthru
sip
bind control source-interface FastEthernet0/0.93
bind media source-interface FastEthernet0/0.93
rel1xx disable
min-se 360
header-passing
!
voice class codec 1
codec preference 1 g711ulaw
codec preference 2 g711alaw
codec preference 3 g729r8
!
voice class h323 1
h225 timeout setup 3
!
application
service new-call flash:/bootstrap.vxml
paramspace english language en
paramspace english index 0
paramspace english location flash:
paramspace english prefix en
!
service cvp-survivability flash:survivability.tcl
paramspace english index 0
paramspace english language en
param alert-timeout 20
paramspace english location flash
paramspace callfeature med-inact-det enable
param setup-timeout 7
paramspace english prefix en
!
service ringtone flash:ringtone.tcl
paramspace english index 0
paramspace english language en
paramspace english location flash
paramspace english prefix en
!
service recovery flash:/recovery.vxml
paramspace english language en
paramspace english index 0
paramspace english location flash:
paramspace english prefix en
!
service cvperror flash:cvperror.tcl
paramspace english language en
paramspace english index 0
paramspace english location flash
paramspace english prefix en
!
service takeback flash:survivability.tcl
paramspace english language en
paramspace english index 0
paramspace english location flash
paramspace english prefix en
!
service bootstrap flash:/bootstrap.tcl
param gtd_format1 ascii
param gtd-field0 noa
paramspace english language en
param gtd-attribute0 rgn
paramspace english index 0
param gtd-field1 dat
paramspace english location flash
param gtp-instance0 1
param gtd-attribute1 fdc
paramspace english prefix en
!
!
vxml version 2.0
!
controller T1 ½
description Incoming and outgoing T1 PRI Trunk
framing esf
linecode b8zs
pri-group timeslots 1-24
!
interface FastEthernet0/0
no ip address
duplex auto
speed auto
!
interface FastEthernet0/0.1
description Admin VLAN
encapsulation dot1Q 1 native
ip address 36.36.36.1 255.255.255.0
!
interface FastEthernet0/0.93
description Voice, Data and Server VLAN
encapsulation dot1Q 93
ip address 192.168.93.1 255.255.255.0
h323-gateway voip interface
h323-gateway voip bind srcaddr 192.168.93.1
!
interface Serial1/2:23
no ip address
encapsulation hdlc
isdn switch-type primary-ni
isdn incoming-voice voice
no cdp enable
!
router ospf 7
log-adjacency-changes
network 36.36.36.0 0.0.0.255 area 0
network 192.168.93.0 0.0.0.255 area 0
!
ip http server
no ip http secure-server
!
voice-port 1/2:23
!
dial-peer voice 1400 voip
description TO CVP CALLSERVER
preference 1
max-conn 2
destination-pattern 5417641400
session protocol sipv2
session target ipv4:192.168.93.3
dtmf-relay rtp-nte
codec g711ulaw
ip qos dscp cs3 signaling
no vad
!
dial-peer voice 1401 voip
description From CVP Call Server. To match label generated for CVP RC
service bootstrap
session protocol sipv2
incoming called-number 5417641401T
dtmf-relay rtp-nte
codec g711ulaw
ip qos dscp cs3 signaling
no vad
!
dial-peer voice 1 pots
incoming called-number .
direct-inward-dial
!
dial-peer voice 3000 voip
description PSTN->CCM
destination-pattern 5417644...
session protocol sipv2
session target ipv4:192.168.93.100
dtmf-relay rtp-nte h245-signal h245-alphanumeric
codec g711ulaw
ip qos dscp cs3 signaling
no vad
!
dial-peer voice 2 pots
description calls from PSTN to CUCCE pilot number will match this first
service cvp-survivability
incoming called-number 5417641400
direct-inward-dial
!
dial-peer voice 9292 voip
service cvperror
session protocol sipv2
incoming called-number 9292T
dtmf-relay rtp-nte h245-signal h245-alphanumeric
codec g711ulaw
no vad
!
dial-peer voice 9191 voip
service ringtone
session protocol sipv2
incoming called-number 9191T
dtmf-relay rtp-nte h245-signal h245-alphanumeric
codec g711ulaw
no vad
!
line vty 0 4
password lab
login
!
cvp-vxml-gw#
CVP VXML Server
Untill this point we have configured CUICM and CVP in generatl. There is another component called VXML Server that play vital role in the solution, although not required.
Few things to remember
- Voice Browser is also called VXML browser
- VXML browser is basically the Cisco IOS VXML Gateway
- VXML gateway browser pages from CVP VXML server (Like FireFox browser browse web pages from an Apache web server)
- Every communication process between the VXML browser and Voice Application has to be initiated by the VXML browser as a request to the VXML server.