00 · Header

T4 · Webex Contact Center Enterprise

CVP & VXML IVR

Color-coded sequence: PSTN → CVP → Router → Desktop. A packet moves along the arrows. Reduced motion keeps every step visible.

Unified Customer Voice Portal is the VoiceXML IVR in the Unified CCE design guides. This room keeps the standalone model, the comprehensive model, and the Webex CCE hosting sentence in separate boxes.

Room T4-R05 Version v0.1 last-verified: TODO Difficulty L3 Est. time 80–100 min Prereq T4-R01 Reading 20 min

01 · Executive summary

Five lines, then why it matters

The VXML Server is a J2EE-compliant application server for dynamic VoiceXML applications. It can be installed without the Call Server. [cite:2]
Standalone without reporting uses the VXML Server (Standalone) option. Standalone with reporting uses the VXML Server option and adds a Call Server and a Reporting Server. [cite:1]
Comprehensive combines Call Director using SIP and VRU-Only. Basic ports play .wav files and collect DTMF. Advanced ports add ASR, TTS, and VXML Server applications. [cite:1]
From Unified CVP 11.5(1), the Call Server IVR service lives on the VXML Server, which builds the VXML pages for the microapplications. [cite:2]
The January 2025 Webex CCE note says custom CVP applications can be hosted on Webex CCE. That sentence is older than 12 months. [cite:5] re-check

Why it matters. Interviews fail when a standalone self-service app is drawn as a comprehensive queue, or when Flow Designer is named as the Unified CVP script tool. The configuration guide names Call Studio. The build-and-manage article names Flow Designer for multi-tenant Webex Contact Center. [cite:1] [cite:6]

02 · Architecture map

Two models, two legs

1Standalone: VVB HTTP to VXML Server
2Comprehensive: switch leg and VRU leg share one Call Server

Mermaid source (not rendered; the SVGs are the pictures)

flowchart LR
  PSTN[PSTN or CUBE] -->|SIP invite| VVB[Cisco VVB]
  VVB -->|HTTP| VXML[VXML Server]
  VXML -->|VoiceXML| VVB
  GW[Ingress gateway switch leg] --> CS[Call Server]
  CS --> VRU[Cisco VVB VRU leg]

03 · Core concepts

What the CVP 15 guide separates

VXML Server

A J2EE-compliant application server for creating and deploying dynamic VoiceXML applications. The standalone install omits the Call Server and is built for self-service. [cite:2]

Call Studio

Applications are created in Call Studio and deployed to the VXML Server. The configuration guide’s standalone procedure says to deploy the application as a zip file. CVPSNMPLogger is enabled by default on a new deployed application. [cite:1]

Two standalone variants

Without reporting, choose VXML Server (Standalone) in the Operations Console. With reporting, choose VXML Server, and the Call Server routes messages between components. Calls arrive through Cisco VVB and run VoiceXML on the VXML Server. Cisco VVB performs ingress. [cite:1]

Reference Design rule

The Solution Design Guide, updated March 15, 2025, says the Comprehensive call flow is the only one you can use in a Reference Design. Standalone VXML Server, Call Director, and VRU-Only are listed as non-reference alternates. [cite:3] re-check

Same Call Server

SIP calls that use Unified CVP micro-applications use the IVR Service of the Call Server that holds the switch leg. VoiceXML fetches go to that Call Server. Micro-application VoiceXML traffic must return only to the same Call Server. Comprehensive calls always use the same Call Server for the switch leg and the VRU leg. [cite:1]

Port license and VRU type

Item	What the guide prints	Cite
Basic comprehensive ports	.wav files and DTMF input	[cite:1]
Advanced comprehensive ports	ASR/TTS servers and VXML Server applications	[cite:1]
Network VRU	Type 10 serves both the switch leg and the VRU leg. Connect with the SendToVRU node in ICM Script Editor.	[cite:1]
ICMH view	Unified ICMH sees the two legs as a single call routed through different peripherals.	[cite:1]
IVR service move	From 11.5(1), the Call Server IVR service is on the VXML Server. Configure IVR settings on the IVR tab.	[cite:2]
Session invalidation	The VXML Server user guide recommends keeping `session_invalidation_delay` at 30 seconds in `global_config.xml`. The file is edited by hand under `%CVP_HOME%\VXMLServer\conf`.	[cite:4] re-check

04 · Ecosystem

Sisters around the IVR

Mini map of the neighbors named on this room’s sequence. Orientation sketch, not a new product claim.

Glossary

VXML Server: J2EE server that runs dynamic VoiceXML applications. Standalone install does not include the Call Server. [cite:2]
Call Studio: The tool that creates the application deployed to the VXML Server. [cite:1]
Cisco VVB: Virtualized Voice Browser. In the standalone figure it receives the SIP invite and requests VoiceXML over HTTP. [cite:1]
Switch leg: Comprehensive leg where the gateway does TDM-to-VoIP and call switching. [cite:1]
VRU leg: Comprehensive leg where Cisco VVB provides VRU voice treatment. [cite:1]
Micro-application: VoiceXML pages the VXML Server creates for Unified CVP microapplications after the 11.5(1) move. [cite:2]
SendToVRU: ICM Script Editor node the comprehensive ICME section names for connecting the call to the Network VRU. [cite:1]
Type 10: Network VRU type that serves both the switch leg and the VRU leg in the comprehensive ICME model. [cite:1]
ReqICMLabel: Call Studio decision element used when a standalone script looks up a label in ICM. [cite:1]
Flow Designer: The build-and-manage article is for Webex Contact Center flows. It is not the Call Studio chapter. [cite:6]
Hybrid IVR: The July 2023 Webex CCE note: traditional ASR/TTS/CRM plus Dialogflow CX, with some nodes on premises and some in the cloud. [cite:5] re-check
CVP on Webex CCE: January 2025 what’s-new: custom code applications, including CVP applications, can be hosted on Webex CCE. [cite:5] re-check

Mind map

Mermaid source (not rendered)

mindmap
  root((Unified CVP))
    Standalone
    Comprehensive
    Call Studio
    Cisco VVB

Sister matrix

Orientation only. Peer columns are labels. help.webex.com does not publish a parity matrix for Microsoft, Amazon Connect, or Genesys.

Sister	What the cited page says	Why it matters here	Config touchpoint	Typical failure	Cite
Workforce management	py6u9h lists WFO feature SKUs for Webex Contact Center Enterprise, CCE, and CCX.	WFM is not a CVP call-flow model.	The SKU table in that article.	Sizing IVR ports from a WFM interval.	[cite:7]
Quality management and recording	The CVP call-flow chapter does not print a QM retention number.	Prompt recording and agent recording are different stores.	Read the Enterprise quality-management guide for the release you run.	Quoting a Calling retention figure as CVP reporting retention.	[cite:1]
E911, RAY BAUM, Kari, RedSky	The CVP call-flow chapter does not configure emergency calling.	An IVR label is not a dispatchable location.	Read the Webex CCE 9-1-1 section the what’s-new page points at, and the phone’s emergency path.	Treating a CVP transfer as proof of 911 compliance.	[cite:5] re-check
Analytics and reporting	Standalone reporting requires a Call Server and a Reporting Server. CUIC stock reports are a different guide.	CVP reporting and CUIC are adjacent, not the same screen.	Operations Console reporting flag, then T4-R07 for CUIC.	Expecting Live Data refresh inside the VXML log.	[cite:1]
Salesforce	Not named in the CVP call-flow chapter read here.	CRM screen-pop is a desktop integration.	Read the CRM guide for the desktop you deployed.	Putting a CRM URL in the VXML app and calling that the Finesse gadget.	[cite:6]
Dynamics 365	Not named in the CVP chapter. Cisco’s multi-tenant connector is not Microsoft’s Dynamics 365 Contact Center.	The name collision still applies.	Read the connector guide for the product on the subscription.	Installing the multi-tenant connector as a CVP element.	[cite:6]
ServiceNow	Not named in the CVP chapter.	Same boundary as the other CRM rows.	Read the ServiceNow guide for the release you run.	Using a multi-tenant ServiceNow article as the VXML design.	[cite:6]
Virtual agents and AI Assistant	July 2023 what’s-new describes Hybrid IVR with Dialogflow CX. The Control Hub AI Assistant article is a multi-tenant Webex Contact Center article.	Name the product on the article.	Hybrid IVR node choice is in the what’s-new example. AI Assistant toggles are in the multi-tenant article.	Turning on a multi-tenant assistant and calling it a CVP element.	[cite:5] re-check
IVR and self-service	This room’s subject. Standalone is self-service. Comprehensive adds queuing and VoIP routing to agents.	The model decides whether ICM owns the queue.	Operations Console call-flow choice and Call Studio.	Queuing in a standalone app that the design guide says has no Unified CCE queuing control.	[cite:1] [cite:3]
Digital channels	VoiceXML is voice. Webex CCE digital channels are named on the what’s-new page as email, chat, SMS, and later WhatsApp and Facebook Messenger.	A VXML app does not become chat.	Manage Digital Channels gadget, cited from the what’s-new page.	Promising SMS from a Call Studio audio element.	[cite:5] re-check
Identity and SSO	The CVP chapter does not define the agent IdP.	Call Studio login and agent desktop login are different consoles.	Read identity for the Webex org in Control Hub, and the CVP Operations Console account separately.	Reusing a Finesse password as the Operations Console password in a runbook.	[cite:1]

Integration edges

From	To	Mechanism	What moves	Cite
Ingress gateway or CUBE	Cisco VVB	SIP invite	The self-service trigger number configured on VVB	[cite:1]
Cisco VVB	VXML Server	HTTP	URL request, then VoiceXML instructions	[cite:1]
VoiceXML	ASR, TTS, media server	References inside the instructions	Voice input, TTS, or .wav playback	[cite:1]
Call Studio	VXML Server	Deployed application	A zip the configuration procedure tells you to deploy	[cite:1]
ICM Script Editor	Network VRU	SendToVRU	The comprehensive ICME connection to Type 10	[cite:1]
Call Server IVR service	VXML Server	Service move at 11.5(1)	Microapplication VXML pages	[cite:2]
Standalone with ICM lookup	ICM	ReqICMLabel	A label lookup without the chapter calling that comprehensive queuing	[cite:1]
Webex CCE host	CVP application	What’s-new hosting note	Custom VXML and Call Server apps moved onto Webex CCE	[cite:5] re-check

Bridges

CVP idea	Where to read the neighbor	Peer label	Cite
Call Studio application	Multi-tenant flows are built in Flow Designer. Open nhovcy4 for that canvas.	Amazon Connect and Genesys flow builders are orientation labels. No equivalence is claimed.	[cite:6]
Comprehensive queue and transfer	On-premises UCCE uses SendToVRU and Script Editor. The design guide limits Reference Designs to Comprehensive.	Teams Phone is not this IVR.	[cite:1] [cite:3]
Hosted CVP on Webex CCE	The January 2025 note is the cloud sentence. It does not rewrite the CVP 15 call-flow chapter.	No peer IVR parity is published on help.webex.com.	[cite:5]

Future hooks

Canon plan: when a newer CVP configuration guide replaces Release 15.0(1), re-read the standalone figure before teaching the SIP invite step.
The March 15, 2025 design-guide sentence that Comprehensive is the only Reference Design call flow stays re-check until that chapter is newer than 12 months.
Dialogflow project steps are not in the July 2023 what’s-new paragraph. Read the CCAI guide before you teach a bot project.

Ecosystem troubleshooting

Symptom	Likely mix-up	Check	Move	Cite
A Reference Design packet uses standalone queuing	Non-reference flow used where the design guide allows only Comprehensive	Does the packet say Reference Design?	Move queuing to Comprehensive, or mark the design non-reference.	[cite:3]
VoiceXML hits a second Call Server	Micro-application rule ignored	Which Call Server owns the switch leg?	Return VoiceXML only to that Call Server.	[cite:1]
The runbook says build the IVR in Flow Designer	nhovcy4 was pasted onto Unified CVP	Which product is on the subscription?	Call Studio for this room. Flow Designer for multi-tenant Webex Contact Center.	[cite:6]
Chat is drawn as a VXML element	Digital channels were merged into voice	What’s-new channel list	Leave chat on the Manage Digital Channels gadget.	[cite:5]

05 · Flow

The standalone figure, then the comprehensive legs

Step	From	To	Protocol	Notes	Cite
1	PSTN or service provider	Ingress gateway or CUBE	Call delivery	Standalone figure, first line.	[cite:1]
2	Gateway	Cisco VVB	SIP invite	Trigger number configured on VVB for the self-service application.	[cite:1]
3	Cisco VVB	VXML Server	HTTP	URL request.	[cite:1]
4	VXML Server	Cisco VVB	VoiceXML	Instructions may reference ASR/TTS and media-server .wav files.	[cite:1]
5	Ingress gateway	Call Server	SIP switch leg	Comprehensive: gateway does TDM-to-VoIP and call switching.	[cite:1]
6	Cisco VVB	Caller	VRU leg	VRU voice treatment. May include ASR/TTS.	[cite:1]
7	VVB	Same Call Server	VoiceXML fetch	Micro-applications return only to the Call Server that holds the switch leg.	[cite:1]
8	ICM script	Network VRU Type 10	SendToVRU	Comprehensive ICME connection named in the guide.	[cite:1]

06 · Config

Operations Console steps the guide names

Decide the model. Standalone without reporting: Device Management path that selects VXML Server (Standalone). Standalone with reporting: VXML Server, plus a Call Server and a Reporting Server. [cite:1]
For a Cisco VVB standalone deployment, define the VXML Server applications, configure the base gateway and VVB settings, and configure the dial-peer that triggers the self-service application. [cite:1]
Create the application in Call Studio and deploy it to the VXML Server. The procedure says to deploy it as a zip file. [cite:1]
Enable loggers in Call Studio. CVPSNMPLogger is on by default for a new deployed application. [cite:1]
If the script must ask ICM for a label, use the ReqICMLabel element. Pass data in Peripheral Variables 1–10. The guide says those values are taken as is. [cite:1]
For comprehensive ICME, configure the IVR service to work with Cisco VVB. Use SendToVRU. Keep both legs on the same Call Server. [cite:1]
IVR settings for microapplications are on the VXML Server IVR tab, because the IVR service moved at 11.5(1). [cite:2]

Screenshot slot: Operations Console call-flow choice, with hostnames redacted.

07 · Limits

Numbers and rules that have a page

Item	Value	Source	Verified?
Standalone minimum, no reporting	VXML Server, Call Studio, and a gateway	[cite:1]	Quoted
Standalone with reporting	Also a Call Server and a Reporting Server	[cite:1]	Quoted
Reference Design call flow	Comprehensive only	[cite:3]	re-check Guide updated March 15, 2025
Basic versus Advanced	Basic: .wav and DTMF. Advanced: ASR/TTS and VXML Server applications	[cite:1]	Quoted. Guide updated December 12, 2025
Micro-app VoiceXML target	Same Call Server as the switch leg	[cite:1]	Quoted
session_invalidation_delay	Recommended default 30 seconds	[cite:4]	re-check
Custom SIP headers, standalone	Initial INVITE only, not reinvite. August 2023 what’s-new.	[cite:5]	re-check
Non-reference sizing table	The design guide says those limits are for non-reference designs only. Do not size a Reference Design from that table.	[cite:3]	re-check

08 · Troubleshooting

Wrong model, wrong server, wrong tool

Symptom	Likely cause	Evidence	Fix	Cite
Reporting is empty on a standalone app	The (Standalone) option was selected	That option does not require a Reporting Server	Use the VXML Server option and add Call Server plus Reporting Server	[cite:1]
Self-service never starts	SIP invite trigger does not match VVB	Guide: gateway sends the trigger configured for the self-service application	Match the dial-peer to that trigger	[cite:1]
Prompts play from the wrong Call Server	VoiceXML was aimed at a second server	Micro-application traffic returns only to the switch-leg Call Server	Point fetches at that Call Server. Comprehensive uses one Call Server for both legs	[cite:1]
ASR is licensed and still silent	Port level is Basic	Basic is .wav and DTMF. Advanced adds ASR/TTS	Confirm Advanced port licensing before you debug the speech server	[cite:1]
A Reference Design review rejects the IVR	Standalone or VRU-Only was used	Design guide: Comprehensive is the only Reference Design call flow	Change the model or label the design non-reference	[cite:3]
Queue treatment never connects	SendToVRU is missing	Comprehensive ICME names that node for the Type 10 VRU	Add SendToVRU in Script Editor	[cite:1]
ICM lookup element returns nothing useful	Peripheral variables were transformed	The guide says variables 1–10 are taken as is	Pass the values unchanged	[cite:1]
End-of-call logging errors	session_invalidation_delay set to 0	User guide: too small a delay breaks end-of-call logging	Keep the recommended 30 seconds unless you test a change	[cite:4]
Custom header missing on reinvite	Expected, on the August 2023 note	Headers are on the initial INVITE only	Read the header on the first INVITE	[cite:5]
IVR tab is missing on the Call Server	Looking at the pre-11.5(1) place	IVR service moved to the VXML Server	Configure the IVR tab on the VXML Server	[cite:2]

09 · Self-question ladder

Twelve rungs

L0What is the VXML Server?

A J2EE-compliant application server for dynamic VoiceXML applications. It can run without the Call Server. [cite:2]

L1What breaks if you want reports and you picked VXML Server (Standalone)?

That option does not require a Call Server or a Reporting Server. Reporting needs the other option plus both servers. [cite:1]

L1Which three components does standalone require before reporting is added?

VXML Server, Call Studio, and a gateway. [cite:1]

L2What are the four steps in the standalone VVB figure?

PSTN or provider to the ingress gateway or CUBE. SIP invite to VVB. HTTP request to the VXML Server. VoiceXML back to VVB, optionally pointing at ASR, TTS, or .wav files. [cite:1]

L2What does each comprehensive leg do?

Switch leg: gateway does TDM-to-VoIP and call switching. VRU leg: Cisco VVB does VRU voice treatment. [cite:1]

L2Why must micro-application VoiceXML return to one Call Server?

The IVR Service of the Call Server that has the switch leg receives the fetches. The guide says the traffic must return only to that Call Server. [cite:1]

L3How do you prove a Reference Design is using the allowed CVP flow?

The design guide says Comprehensive is the only call flow you can use in a Reference Design. Standalone is listed under non-reference. [cite:3] re-check

L3Basic ports are quiet when the caller speaks. What do you check?

Basic supports .wav and DTMF. ASR and TTS are Advanced. [cite:1]

L3Where did the Call Server IVR service go?

To the VXML Server, beginning with 11.5(1). Microapplication pages are created there. [cite:2]

L4How is comprehensive different from multi-tenant Flow Designer?

This room’s script tool is Call Studio, and the queue handoff the guide names is SendToVRU. Flow Designer is the Webex Contact Center flow article. [cite:1] [cite:6]

L4What does the January 2025 Webex CCE note add?

Custom code applications can be hosted on Webex CCE, including a move of CVP applications that use VXML and Call servers. The note is older than 12 months. [cite:5] re-check

L5What constraint stops you from treating standalone as a full contact-center queue?

The design guide describes standalone as a VRU with no integration to Unified CCE for queuing control or subsequent call control, and it excludes that flow from Reference Designs. [cite:3] re-check

10 · Lab

Paper lab: label the model before you draw the ports

Goal: classify one IVR design as standalone or comprehensive using only the CVP 15 configuration guide.
Prereq: the guide, not a production Operations Console. [cite:1]
Step 1. Write whether reporting is required. Expected: (Standalone) option, or VXML Server plus Call Server and Reporting Server.
Step 2. Draw the standalone figure: gateway or CUBE, SIP invite, VVB, HTTP, VoiceXML.
Step 3. If the packet says Reference Design, write Comprehensive and name the switch leg and the VRU leg.
Step 4. Write the Call Server rule for micro-application VoiceXML.
Evidence: the Operations Console option name, the port level (Basic or Advanced), and the Script Editor node (SendToVRU) if comprehensive.
Break it: point VoiceXML at a second Call Server. Recovery: return it to the switch-leg Call Server.
Reflection: which sentence was a December 2025 configuration-guide fact, and which was a March 2025 design-guide fact you marked re-check?

11 · Quiz

Twelve checks

0 revealedAnswers stay closed until you open them.

Q1MCQ

Standalone without reporting requires:

Call Server and Reporting Server
VXML Server (Standalone) option, and no Call Server or Reporting Server
SendToVRU
Flow Designer

Reveal

B. [cite:1]

Q2MCQ

The standalone minimum, before reporting, is:

VXML Server, Call Studio, and a gateway
Router and Logger only
CUIC and Finesse
Two Call Servers

Reveal

A. [cite:1]

Q3Scenario

The gateway sends a SIP invite to Cisco VVB. What must that invite carry, according to the standalone figure?

Reveal

The trigger number configured in Cisco VVB for the self-service application. [cite:1]

Q4MCQ

Cisco VVB gets VoiceXML instructions by:

An HTTP URL request to the VXML Server
A CUIC export
A Finesse gadget
BGP

Reveal

A. [cite:1]

Q5MCQ

Comprehensive Basic ports support:

.wav files and DTMF
ASR and TTS only
Digital chat
Live Data

Reveal

A. Advanced adds ASR/TTS and VXML Server applications. [cite:1]

Q6Scenario

Micro-application VoiceXML is fetched from a different Call Server than the switch leg. What does the guide require?

Reveal

VoiceXML for micro-applications must return only to the same Call Server as the switch leg. [cite:1]

Q7MCQ

The only CVP call flow the design guide allows in a Reference Design is:

Standalone
Call Director
Comprehensive
VRU-Only

Reveal

C. The chapter was updated March 15, 2025, so this stays re-check. [cite:3]

Q8Draw it

Draw two legs. Label which one is the gateway and which one is Cisco VVB.

Reveal

Switch leg on the gateway. VRU leg on Cisco VVB. [cite:1]

Q9MCQ

From CVP 11.5(1), microapplication VXML pages are created by:

The VXML Server
CUIC
Finesse
Partner Hub

Reveal

A. The Call Server IVR service moved to the VXML Server. [cite:2]

Q10Scenario

A script needs an ICM label from a standalone Call Studio app. Which element does the guide name?

Reveal

ReqICMLabel. Peripheral Variables 1–10 are taken as is. [cite:1]

Q11MCQ

SendToVRU connects the call to:

The Network VRU
A Finesse workflow
Edge Connect
A Calling hunt group

Reveal

A. Type 10 serves both legs in the comprehensive ICME section. [cite:1]

Q12Scenario

Someone cites Flow Designer as the Unified CVP builder. Which article did they open?

Reveal

The Webex Contact Center flow article, nhovcy4. This room’s builder is Call Studio. [cite:6] [cite:1]

12 · Audio

Slots for Studio

Transcript slot

Studio fills this from the cites. The prompt is the spoken outline.

Transcript slot

Studio fills this from the cites. The prompt is the spoken outline.

Transcript slot

Studio fills this from the cites. The prompt is the spoken outline.

13 · Interview

Oral answers

30 seconds. Unified CVP has a standalone self-service model and a comprehensive switch model. Standalone needs the VXML Server, Call Studio, and a gateway. Reporting adds a Call Server and a Reporting Server. Comprehensive is the Reference Design flow.

2 minutes. In the standalone figure the call hits an ingress gateway or CUBE, the gateway sends a SIP invite to Cisco VVB with the trigger, VVB requests VoiceXML over HTTP, and the instructions can point at ASR, TTS, or .wav files. Comprehensive has a switch leg on the gateway and a VRU leg on VVB. Micro-application VoiceXML returns only to the Call Server that owns the switch leg. Type 10 and SendToVRU are the ICME names. Basic ports are .wav and DTMF. Advanced adds speech and VXML applications.

30 seconds, the tool. I build the app in Call Studio. Flow Designer is the multi-tenant Webex Contact Center canvas, not this chapter.

2 minutes, the cloud sentence. A January 2025 what’s-new line says Webex CCE can host custom CVP applications. I keep that sentence marked re-check, and I do not let it erase the CVP 15 call-flow chapter. Hybrid IVR, from July 2023, is the note that mixes on-premises ASR/TTS with Dialogflow CX. That date is also re-check.

What you will not say. You will not size a Reference Design from the non-reference limits table. The design guide says those limits apply to non-reference designs only.

14 · Citations

Ledger

Retrieved 2026-10-14. Study notes from public sources.

Configuration Guide for Cisco Unified Customer Voice Portal, Release 15.0(1), chapter Unified CVP Call Flow Models — cisco.com — updated December 12, 2025 — CVP 15 call flow models. Standalone variants, VVB sequence, comprehensive legs, Basic and Advanced, same Call Server, Type 10, SendToVRU, Call Studio deploy, ReqICMLabel.
Configuration Guide for Cisco Unified Customer Voice Portal, Release 15.0(1), chapter VXML Server Configuration — cisco.com — VXML Server configuration. J2EE server. IVR service moved to the VXML Server at 11.5(1).
Solution Design Guide for Cisco Unified Contact Center Enterprise, Release 15.0(1), chapter Non-Reference Designs — cisco.com — updated March 15, 2025 — Non-reference designs. Comprehensive is the only Reference Design call flow. re-check
User Guide for Unified CVP VXML Server and Unified CVP Call Studio, Release 15.0(1), VXML Server configuration — cisco.com — global_config.xml. Hand edit. Recommended session_invalidation_delay of 30 seconds. re-check
What’s new for administrators in Webex Contact Center Enterprise — help.webex — article nhy3hvdb — help.webex.com article nhy3hvdb. January 2025 custom CVP hosting. July 2023 Hybrid IVR. August 2023 custom SIP headers on the initial INVITE. September 2022 pointer to the Webex CCE 9-1-1 section. Digital-channel list on the same page. re-check
Build and manage flows with Flow Designer — help.webex — article nhovcy4 — help.webex.com article nhovcy4. Cited as the multi-tenant flow article, not as Call Studio.
Webex WFO: Feature Specific SKUs — help.webex — article py6u9h — help.webex.com article py6u9h. Scoped to Webex Contact Center Enterprise, Contact Center Enterprise, and Contact Center Express.

15 · Re-engineer later

Still open

Open questions: the VXML user-guide update date for the 30-second recommendation; Dialogflow project steps beyond the July 2023 paragraph.
Facts still marked re-check: the March 15, 2025 Reference Design sentence, session_invalidation_delay, and every what’s-new paragraph dated before October 2025.
Assets missing: Operations Console screenshot, exported SVGs, audio.
Ideas for v1.0: a one-page model card generated from the call-flow chapter at review time.
Next review: re-read the non-reference chapter and nhy3hvdb before teaching those sentences as current.

Sources and go deeper

Checked links were opened this month. A confirm row has no address because that page was not opened.

Wikipedia Webex (Wikipedia) last checked 2026-10
Vendor doc Webex Help Center last checked 2026-10
DevDocs Webex developer documentation last checked 2026-10
DevDocs Webex developer getting started last checked 2026-10
Community Webex community last checked 2026-10
SRND Cisco Collaboration design zone last checked 2026-10
RFC RFC 3261 SIP: Session Initiation Protocol last checked 2026-10
Port table IANA service name and port number registry last checked 2026-10
Port table Port reference for Webex Calling last checked 2026-10
Wikipedia Call centre (Wikipedia) last checked 2026-10
Wikipedia Interactive voice response (Wikipedia) last checked 2026-10
Release notes What's new for administrators in Webex Contact Center last checked 2026-10
Vendor doc CVP 15 call flow models last checked 2026-10
Vendor doc VXML Server configuration last checked 2026-10
Vendor doc Non-reference designs last checked 2026-10
Vendor doc global_config.xml last checked 2026-10
Vendor doc help.webex.com article nhy3hvdb last checked 2026-10
Vendor doc help.webex.com article nhovcy4 last checked 2026-10
Vendor doc help.webex.com article py6u9h last checked 2026-10

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