Cisco WebEx Cloud Connected Audio
Q&A
Cisco Public
Cisco WebEx Cloud
Connected Audio
CCA Architectures
Q
A
Service Features
What are the architectures that Cisco WebEx®
Cloud Connected Audio (CCA) supports?
Q
Can I purchase Cisco WebEx CCA as an audioonly conferencing service?
CCA supports two different architectures:
A
No. Because of regulatory limitations, we cannot sell WebEx
audio-only services. CCA must be sold as part of the WebEx
integrated web-conferencing service. CCA ports can be sold
to existing WebEx customers as a replacement of their audio
solution. New customers can purchase CCA ports only as part
of an overall web-conferencing solution. The CCA contract term
must coincide with the WebEx contract term.
Q
Which Cisco WebEx data services and clients
does CCA support?
A
One of the biggest benefits of CCA is that it is a native WebEx
audio-conferencing service and provides exactly the same
integrated conferencing experience as WebEx PSTN-based
audio. CCA works with all WebEx centers with their full suite
of features and functions. It also works with all the clients and
mobile devices that the WebEx application supports.
• CCA Enterprise: In this option, you peer directly with Cisco.
You will need to deploy Cisco® Unified Communications
Manager (8.5 or later) and Cisco Unified Border
Element (CUBE) on premises, and use your own unified
communications and IP telephony network to carry on-net
and off-net calls before handing them over to Cisco.
The Cisco WebEx application also provides an option that lets
you use WebEx PSTN connectivity, meaning the application
provides the dial-in numbers and callback capability in
certain countries. You must pay separately for WebEx PSTN
audio, and you must be aware of the WebEx PSTN footprint.
• CCA Service Provider (CCA SP): In this option, the SP partner
peers with Cisco and provides the transport and access (phone
numbers) to you while Cisco provides audio bridging from the
Cisco WebEx Cloud. The SP partner also provides lifecycle
support, that is, day 0, day 1, and day 2 support. Unlike the CCA
Enterprise architecture, with CCA SP, the SP partners do not
have the option of using WebEx PSTN connectivity.
© 2016 Cisco and/or its affiliates. All rights reserved.
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Cisco WebEx Cloud Connected Audio
Q&A
Cisco Public
Q
Will CCA work with Cisco WebEx video (Formally
Cisco Collaboration Meeting Rooms [CMR])?
A
Yes, the CCA Enterprise architecture will work with CMR, although
the two deployments are separate and not dependent on each
other. CMR audio and video will reach the Cisco WebEx platform
over the Internet and will not flow over the CCA architecture,
while only CCA SIP trunks carry the telephony audio.
However, with the CCA SP architecture, the SP partner will need
to test the CMR deployment as part of the CCA SP certification
process. When tested, the SP partner should be able to offer
CMR Cloud to customers.
Q
A
Does CCA support localization?
• If a customer sends the single access number for all dial-in
numbers, that customer can set the language preference in
the “Locale” parameter in the SIP URI. The locale tag should
be present in the SIP “To:” header of the invite message from
the customer or SP partner to identify the desired language.
For example, To: <sip:[email protected];locale=en>.
The WebEx application will look at this parameter and play the
audio prompts in the local language—in this case, English.
Q
With CCA, who provides the conference
telephone numbers?
A
For CCA Enterprise, customers own the conferencing numbers.
They must provide the toll and/or toll-free numbers to their
users, and the Cisco WebEx application will display these
numbers in the conferencing GUI. With the CCA Enterprise
architecture, customers also have an option to purchase WebEx
dial-in numbers and callback capabilities over WebEx PSTN.
CCA supports the same localization that WebEx data conferencing
supports. CCA also supports localized audio prompts.
Because the phone numbers belong to the customer in a typical
CCA Enterprise deployment or to the SP partner in a CCA SP
deployment, the logic to play local language prompts on WebEx
PSTN numbers does not change.
For CCA SP, the SP partner provides the conference telephone
numbers, and the Cisco WebEx application will display these
numbers in the conferencing GUI. With the CCA SP architecture,
there is no option to get WebEx dial-in numbers or callback
over WebEx PSTN.
Here is the logic to play local audio prompts for a CCA customer:
Callback: The language of the local audio prompt is based on
the country code of the callback number. This logic is the same
as that for WebEx PSTN audio.
Dial-in: There are two separate use cases for dial-in numbers:
• If a CCA customer sends a unique access number (DNIS)
to the WebEx application for each of the phone numbers
configured as part of the WebEx service, the application can
play the audio prompts in the local language based on the
phone number.
© 2016 Cisco and/or its affiliates. All rights reserved.
Q
How are existing Cisco WebEx Audio customers
affected if they wish to migrate to CCA?
A
The only difference existing customers will notice is that the
dial-in numbers that appear to attendees as they join the
conference will change, because the numbers displayed within
CCA are owned by the customer. Everything else, in terms of
features, functions, and end-user experience, will be the same.
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Cisco WebEx Cloud Connected Audio
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Cisco Public
Q
A
How will attendees calling from remote locations
or different countries join a WebEx conference
with CCA?
For CCA Enterprise, global WebEx toll-free call-in numbers
are not available with CCA. Customers must use their own
IP telephony networks to carry international calls or calls
from remote locations. An attendee joins by dialing one of
the numbers provided by the customer, as defined when
the system is set up and integrated with Cisco Unified
Communications Manager. WebEx via WebEx Audio does have
a comprehensive list of local dial-in numbers for countries
around the globe, and can be used in conjunction with CCA,
although the customer will be billed separately.
Q
Does CCA support the *0 function to contact
tech support?
A
Yes. Pressing *0 to connect to a tech support agent while in a
meeting will work over CCA. However, the tech support agent
does not have control of the meeting and can answer only “how
to” questions or report a problem. Cisco WebEx conferencing
is designed as a self-service web-conferencing service where
hosts can manage meetings through online controls. The
following are important highlights of this feature:
• Both hosts and attendees have the option to connect with
tech support during the meeting.
• Users can access tech support from the client UI or by
pressing *0 from the phone.
For CCA SP, attendees can join using the number provided by
the service provider.
• The feature is available only to telephony users; it is not
available to VoIP users.
Q
Can I choose to have numbers provided by the
Cisco WebEx application along with CCA?
• Only hosts have the option to bring tech support into the
meeting; attendees and alternate hosts do not.
A
Yes, Cisco does allow CCA Enterprise customers to choose
a list of countries where they want numbers provided by the
Cisco WebEx application. The rest of the locations, which are on
customer IP telephony networks, will use the CCA architecture,
in which customers provide the conference numbers and calls
will be routed by their Cisco Unified Communications Manager.
Any usage of the WebEx Audio numbers will be billed on a
per-minute basis. One caveat is that you cannot choose to have
both your own numbers and numbers provided by the Cisco
WebEx application in the same country.
• IT can configure primary and secondary (backup) techsupport numbers in the site admin.
Numbers provided by the Cisco WebEx application or callback
over the Cisco WebEx PSTN are not available with the CCA
SP architecture. CCA SP partners are solely responsible for
providing the PSTN coverage.
© 2016 Cisco and/or its affiliates. All rights reserved.
• The feature is available to CCA customers only.
• The tech support must be either the customer IT help desk
or a third-party vendor or service provider partner—not Cisco
WebEx tech support.
Q
A
Can I use CCA with a codec other than G.711?
Yes. But because CCA is designed to work only with G.711, you
would be responsible for transcoding any non-G.711 audio
media streams to G.711 before sending the audio traffic to the
WebEx application. This solution does not support any other
audio codec.
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Cisco WebEx Cloud Connected Audio
Q&A
Cisco Public
Q
A
What key functions are available in the Cisco
Unified MeetingPlace® application that are not
available with CCA?
The Cisco Unified MeetingPlace solution is an audio-only
conferencing platform. Cisco WebEx CCA is an integrated
conferencing platform and is built with a different set of use
cases. Table 1 provides a list of features that exist in the Cisco
Unified MeetingPlace application but not in CCA.
Table 1. Features Available in Cisco Unified MeetingPlace Application
and Not in CCA
Cisco Unified MeetingPlace Feature
Q
My company has a global presence. Can I still
use CCA?
A
Yes. CCA is available to customers with a global presence. You
can interconnect with Cisco WebEx meetings in the United
States, Europe, and Asia Pacific. We can provide a list of data
centers on request.
Support Options
Q
A
Any attendee can start the audio-only (PCN) meeting on behalf of the host
using non-host credentials without any prearrangements.
Users can view attendee lists in audio-only meetings.
Users can press #2 at any time during an audio-only or integrated-audio
meeting to request a roll call via audio playback. The roll call plays back only for
the requester.
Users retain telephone user interface options.
Can the Cisco WebEx cloud infrastructure for CCA
be dedicated to just my traffic?
A
No. Cisco WebEx CCA is a multitenant solution and will
not dedicate any equipment or bandwidth to any specific
customer’s audio traffic. All customer traffic will traverse over
shared infrastructure, which includes WebEx data center
equipment, audio bridges, other servers, and all connections
between them.
© 2016 Cisco and/or its affiliates. All rights reserved.
A CCA Enterprise customer has two support options:
• You can choose to buy managed day 2 support from the
Collaboration Experience Managed Service (CEMS) team
from Cisco Advanced Services, where the service DMARC is
extended to CCA CUBE on your premises. The CEMS team
provides various service levels.
• You can choose not to buy the managed support and
agree instead to support on-premises CCA CUBE and CCA
peering connections on your own. The service DMARC will
be the CCA peering router in the Cisco Cloud. Cisco WebEx
Technical Support provides the Tier 2 support to your IT
help desk, which is supposed to provide the Tier 1 support
(although the WebEx application will provide that Tier 1
support training).
Users receive static PIN codes or meeting IDs for integrated meetings.
Q
What are the support options for CCA?
For CCA SP end customers, the SP partner will be responsible
for providing the support options.
Q
A
What is the DMARC of the CCA service?
The demarcation point for CCA is the Cisco WebEx data center.
You can purchase management and monitoring of IP peering
links and on-premises CUBE management at a separate per-port
charge from Cisco Managed Services.
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Cisco WebEx Cloud Connected Audio
Q&A
Cisco Public
Supported Configurations
Q
A
Is WebEx PSTN supported with CCA?
Cisco WebEx dial-in numbers and callback capability over
WebEx PSTN are not available with the CCA SP architecture.
The SP partner is solely responsible for providing the telephony
access to the end customer.
However, the CCA Enterprise architecture does allow you to
also use WebEx dial-in numbers and callback over WebEx
PSTN with CCA. There are few caveats, however:
• Callbacks: For any given country, you must choose whether
callbacks will be made over WebEx PSTN or CCA.
• Dial-in: You must provide the list of countries where you
want WebEx to provide the PSTN number. You must also
acknowledge the WebEx PSTN footprint, which limits WebEx
numbers.
• In any given country, you can have both a WebEx PSTN
number and your own CCA number. Both numbers can be
displayed in the Cisco WebEx UI with different labels.
Q
With CCA Enterprise, can I forward calls from a
phone number I own to a WebEx PSTN number?
A
No. No call forwarding is allowed because it prevents WebEx
Cloud Operations from troubleshooting any call-quality issues
and can result in dual-tone multifrequency (DTMF) issues.
Q
Can I display fewer numbers than the number of
DNISes I send to the Cisco WebEx application?
In other words, can a single display number
(displayed in the Cisco WebEx client UI) be
mapped to multiple DNISes?
A
No. WebEx conferencing does not allow you to map multiple
DNISes to the same display number, meaning that you must send
a single DNIS for each display number. However, the WebEx
application does support the opposite configuration, in which the
same DNIS is mapped to multiple display numbers.
© 2016 Cisco and/or its affiliates. All rights reserved.
Q
Can a CCA customer have their Cisco WebEx
data in one theater cluster and their telephony
bridge in a different theater?
A
No, this configuration is not supported.
CCA Offer and Billing
Q
How do I determine the number of CCA ports I will
need?
A
The Cisco WebEx solution has an average usage of 5000
minutes per CCA port. The number of CCA ports is calculated
by dividing the monthly volume of audio conferencing minutes
by 5000. This calculation should be based on your peak usage
to accommodate any burst in usage.
Q
What is the minimum number of CCA ports that
I can buy?
A
For a new CCA Enterprise order, you must purchase at least 300
CCA ports per month. For an add-on order (adding ports to an
existing CCA deployment), you must purchase at least 25 ports.
For CCA SP, there is no order minimum. The SP partner
determines the offer and requirements.
Q
A
Where can I purchase CCA ports?
You can purchase CCA ports from the Cisco Global Price List
(GPL) as well as the Cisco WebEx price list, or through an
approved CCA SP partner.
Q
If a user is not able to join the teleconference
(does not press 1 on callback, etc.), is this
counted toward port usage?
A
No call detail record (CDR) will be generated and this will not be
counted toward port usage.
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Cisco WebEx Cloud Connected Audio
Q&A
Cisco Public
Q
A
If a user does not press 1 during a callback to be
connected to the teleconference, how long will
the system wait before terminating the call?
If a user does not press 1, the system will wait at least 54
seconds (90 seconds at most) before terminating the call. During
that time, the system will prompt the user to press 1 three times.
Each time the system will play the prompt and then wait 15
seconds for user response.
The exact time will depend on the target phone number, since
different countries have different languages and slight variations
in the prompt. For example, for U.S. numbers, the system will
wait about 57 seconds before terminating the call. For Chinese
numbers, the system will wait about 69 seconds before
terminating the call.
Connectivity Options
Q
Does Cisco WebEx conferencing provide me with
IP peering connections?
A
No. WebEx conferencing does not provide, procure, or pay for
the IP peering connections required for CCA.
You must work with your service provider to obtain these
connections. The application does, however, provide the list of
data centers where you can connect for a WebEx meeting.
Q
What type of circuits do I need to connect with the
Cisco WebEx Cloud?
A
Circuit capacity should be adequately sized to carry traffic
with headroom under a failure scenario. Total traffic should not
exceed 80 percent of circuit capacity during a failure scenario,
as measured over a 30-second timeframe. No channelization
or subrate schemes will be supported. Circuit handoffs must
be based on optical Ethernet. The minimum Ethernet handoff is
Gigabit Ethernet.
Q
In which locations can I connect to a Cisco
WebEx meeting?
A
Please refer to the interconnection guidelines document, which
contains a list of locations you can connect to with Cisco WebEx
Cloud.
On-Premises Equipment
Q
What is the minimum hardware required for CCA
Enterprise?
A
At a minimum, you will need a CUBE at each of your data
centers that interconnect with the Cisco WebEx data center.
This CUBE can be on a Cisco ASR 1000 Series Aggregation
Services Router or a Cisco Integrated Services Router (ISR), as
determined by the concurrent port capacity requirements.
Q
How many connections are required between my
company and the Cisco WebEx application?
Q
Can I use existing CUBE deployments meant for
SIP trunking to a service provider?
A
WebEx CCA requires you to connect with the WebEx application
in at least two geographically separate locations in each region
to establish minimum redundancy. You can configure redundant
IP links in Active/Active or Active/Standby mode using Border
Gateway Protocol (BGP) metrics (MEDs and localpref).
A
Yes, as long as there is enough capacity to add CCA traffic.
However, we recommend that you have separate CUBE
deployments for CCA, for clean architecture and easy
troubleshooting.
© 2016 Cisco and/or its affiliates. All rights reserved.
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Cisco WebEx Cloud Connected Audio
Q&A
Cisco Public
Impacts of Migration
Q
What circuit connection time is used by CCA
SP partners?
A
We strongly recommend Ethernet Private Line (EPL) or Layer
2 Multiprotocol Label Switching (MPLS) circuits. We can help
ensure a sub-3-second convergence time in case of failure on
Layer 2 circuits. CCA SP can work with Layer 3 MPLS circuits if
convergence times are acceptable.
Q
b.TSP to CCA SP migration: If the CCA SP provider was also
their telephony service provider (TSP), the phone numbers
may remain the same, as the SP can choose to provision the
same phone numbers. However, audio preferences will need
to be configured. There also may be some feature gaps
between the TSP experience and the CCA SP experience
(depending on the TSP).
Does the Cisco WebEx application support 10
Gigabit Ethernet ports for CCA SP partners?
A
The standard supported port type is a Gigabit Ethernet port.
Fractional data rates are supported. Please note that it is the
service provider’s responsibility to monitor and manage the
capacity on these links and ensure that there is enough available
bandwidth based on port usage. 10 Gigabit Ethernet connectivity
would need to be evaluated on case-by-case basis.
c.MeetingPlace to CCA SP migration: Phone numbers
may change unless the CCA SP provider also provided
MeetingPlace phone numbers. Audio options will need to be
configured.
Q
A
Are Cisco WebEx Audio bridges Active/Active?
Q
What is the impact on sites that migrate to
CCA SP?
A
If an existing WebEx data customer is moving from any audio
option to CCA SP, users’ data preferences are not affected.
However, the audio experience may change.
a.Cisco WebEx PSTN Audio to CCA SP migration: User audio
preferences do not need to change, but the phone number
will be different.
Q
Can I use existing CUBE deployments meant for
SIP trunking to a service provider?
A
Yes, as long as there is enough capacity to add CCA traffic.
However, we recommend that you have separate CUBE
deployments for CCA, for clean architecture and easy
troubleshooting.
No. Cisco WebEx Audio bridges are Active/Standby.
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