Crestron Mercury CCS-UC-1 User manual

CCS-UC-1
Crestron Mercury™ Tabletop Conference
System with Microsoft®Skype®for Business
Configuration Guide
Crestron Electronics, Inc.

Crestron product development software is licensed to Crestron dealers and Crestron Service Providers (CSPs) under a limited non-exclusive,
non-transferable Software Development Tools License Agreement. Crestron product operating system software is licensed to Crestron
dealers, CSPs, and end-users under a separate End-User License Agreement. Both of these Agreements can be found on the Crestron
website at www.crestron.com/legal/software_license_agreement.
The product warranty can be found at www.crestron.com/legal/sales-terms-conditions-warranties.
The specific patents that cover Crestron products are listed at www.crestron.com/legal/patents.
Certain Crestron products contain open source software. For specific information, visit www.crestron.com/legal/open-source-software.
Crestron, the Crestron logo, AirMedia, Crestron Mercury, and Crestron Toolbox are either trademarks or registered trademarks of Crestron
Electronics, Inc. in the United States and/or other countries. Microsoft, Skype, and Windows are either trademarks or registered trademarks
of Microsoft Corporation in the United States and/or other countries. Other trademarks, registered trademarks, and trade names may be
used in this document to refer to either the entities claiming the marks and names or their products. Crestron disclaims any proprietary
interest in the marks and names of others. Crestron is not responsible for errors in typography or photography.
This document was written by the Technical Publications department at Crestron.
©2017 Crestron Electronics, Inc.

Configuration Guide – DOC. 8256A Contents •i
Contents
Introduction 1
Audience ....................................................................................................................... 1
Topology ....................................................................................................................... 2
Software Requirements ................................................................................................. 2
Hardware Requirements................................................................................................ 2
Product Description ....................................................................................................... 3
Summary ....................................................................................................................... 3
Features Supported....................................................................................................... 3
Features Not Supported ................................................................................................ 3
Known Issues and Limitations ....................................................................................... 4
Crestron Mercury Configuration 5
Setup............................................................................................................................. 5
Configure the Device ..................................................................................................... 5
Configure the SfB Parameters................................................................................. 7
Add Certificates ...................................................................................................... 8
Skype for Business Configuration 10
Configure Host A Record............................................................................................. 10
Configure a Crestron Mercury SfB User....................................................................... 12
Configure the PSTN Gateway...................................................................................... 13
Configure the Dial Plan ................................................................................................ 16
Configure Voice Policy ................................................................................................. 18
Configure PSTN Usage................................................................................................ 19
Configure a Route ....................................................................................................... 20
Configure a Trunk ........................................................................................................ 21

Configuration Guide – DOC. 8256A CCS-UC-1: Crestron Mercury with Skype for Business •1
CCS-UC-1: Crestron Mercury™
Tabletop Conference System with
Microsoft®Skype®for Business
Introduction
This configuration guide describes the necessary procedure to configure the Crestron
Mercury™ devices to register to Microsoft®Skype®for Business (SfB) as a basic SIP
endpoint.
Audience
This document is intended for users attempting to configure and use the Crestron Mercury
devices as SIP Endpoints registering to SfB.

2•CCS-UC-1: Crestron Mercury with Skype for Business Configuration Guide – DOC. 8256A
Topology
The network topology for the Crestron Mercury endpoint to interop with SfB is as shown
below.
SIP Endpoint Integration with SfB - Reference Network
The lab network consists of the following components:
•SfB cluster for voice features
•Skype desktop clients
•Crestron Mercury as the SfB Endpoints
Software Requirements
•Skype for Business 6.0.9319.259
•Mercury devices v 1.3553.14230.002
Hardware Requirements
•Windows Server with SfB
•Cisco 3845 as PSTN Gateway
•SfB desktop client 15.0.4885.1000
•Crestron Mercury devices (2)

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Product Description
The Crestron Mercury device is a complete solution for conference rooms. It acts as an all-
in-one touch screen, speakerphone, and AirMedia®product for conference rooms that
provide microphones and speakers integrated into the user interface at the table.
Crestron Toolbox™ software is used to discover and control all Crestron devices on the
network.
The Crestron Mercury web interface is used to control the Crestron Mercury devices on the
network.
Summary
The Crestron Mercury devices were configured on SfB as SIP endpoints. The devices
successfully registered to SfB with digest authentication.
With critical failures on basic calls originating from Mercury, this topology is recommended
for field deployments.
Features Supported
•Registration with digest authentication
•Basic calls with G711u and G711a codecs
•Caller ID
•DTMF support
•Early media support
•Retrieval of a parked call
•Conference participant
•Call hold and resume
•Call waiting
Features Not Supported
•Caller ID presentation with name and number display
•Call forwarding on the device
•Conference
•Initiating attended call transfer
•Initiating semi-attended call transfer
•Initiating Blind Call Transfer
•Configuration of Shared Line on device
•Initiating Call Park

4•CCS-UC-1: Crestron Mercury with Skype for Business Configuration Guide – DOC. 8256A
Known Issues and Limitations
•The Crestron Mercury device fails to register with SfB when the internal server or
external server is configured on the device.
•The Crestron Mercury device handles a transfer with two-way audio, but after the
transfer is complete, it drops the call.
•An attempt to add a PBX endpoint to a conference when the Crestron Mercury
device is already in a call with PSTN fails with an error informing that the PBX
endpoint is either unavailable or offline.
•The Crestron Mercury device does not play appropriate tones when it receives an
error code.
•The Crestron Mercury device is able to retrieve the call parked by the Skype
desktop client and there is two-way audio. However, after retrieving the parked call,
the call control options disappear from the Crestron Mercury device’s display.
•A hunt group call fails when the Crestron Mercury device answers the call (the hunt
group call succeeds when the SfB desktop client answers).
•No music on hold is heard on the PBX endpoint when the Crestron Mercury device
places the call on hold.
•The Crestron Mercury device handles call waiting, but it does not provide an option
to put the current call on hold to answer a second incoming call. The Crestron
Mercury device has to hang-up the ongoing first call to answer the second call, or it
can reject the incoming second call.
•When media bypass is enabled on the PBX, media is not being anchored on the
Crestron Mercury device. Instead, the mediation server anchors the media.

Configuration Guide – DOC. 8256A CCS-UC-1: Crestron Mercury with Skype for Business •5
Crestron Mercury Configuration
Setup
The LAN port of the Crestron Mercury device needs to be connected to one POE+ port to
power it up and be connected to the network for reachability to SfB. The PoE+ switch that
is used should have the LLDP functionality enabled for the device to power up and be
completely functional. By default, the “poeplus” configuration is set to Off on the device.
Configure the Device
To configure the Crestron Mercury device, follow this procedure:
1. Access the web GUI for the device by using an http session with the device’s IP
address. The device IP address used in this example was 10.64.201.60
Crestron Mercury: Login to Web GUI
2. Click Sign In and log in to the device. For information on device administration,
refer to the CCS-UC-1 Supplemental Guide (Doc. 7844) at
www.crestron.com/manuals.

6•CCS-UC-1: Crestron Mercury with Skype for Business Configuration Guide – DOC. 8256A
The Status screen that appears displays basic information on the device.
Crestron Mercury: Status
The device can be configured from the Network page.

Configuration Guide – DOC. 8256A CCS-UC-1: Crestron Mercury with Skype for Business •7
3. On the web GUI, navigate to Network.
Crestron Mercury Configuration: Network Setting: DHCP Off: Static IP Configured
4. Enter the following parameters in the Adapter 1 section to configure the Crestron
Mercury device.
•Domain Name: skypelabsj.local was used in this example
•DHCP Enabled: Choose either of the following:
oObtain an IP address automatically (On)
oUse the following IP address (Off)
For the example, a dynamic IP was configured.
NOTE: The DNS Server 1 entry should be the DNS server where all the
SfB and Crestron Mercury A & SRV records are configured. In this
example, the DNS server on the domain controller is used: 10.64.1.3 was
used in this example.
5. Click Save Changes.
Configure the SfB Parameters
To configure the SfB parameters, follow this procedure:
1. On the web GUI, navigate to Device > SIP Calling.
2. Set Enable SIP to Off, and click Save Changes.
3. On the web GUI, navigate to Device > Skype for Business.
4. Set Enable to Enabled.
5. Configure the Username:Enter the SIP URI of the Skype for Business user.
6. Configure the Password:Enter the password of the SFB user.

8•CCS-UC-1: Crestron Mercury with Skype for Business Configuration Guide – DOC. 8256A
7. Configure the SIP Address: Enter the SIP URI of the Skype for Business user.
8. Click Save Changes.
When SfB is enabled, the Crestron Mercury device displays a Skype logo on its Make a Call
screen. The logo is greyed out until the device registers with SfB.
Add Certificates
For a successful TLS handshake between the Crestron Mercury device and SfB, a root
certificate needs to be added to the Crestron Mercury device. This can be downloaded from
the certificate authority that serves SfB.
To upload certificates to the Crestron Mercury device, follow this procedure:
1. Navigate to Device > Skype for Business.
2. Click Manage Certificates.
Mercury: UI: Manage Certificates Screen: Add Root Certificate
3. Click Add Root Certificate. The Add Certificate screen is displayed.
a. Click to delete a certificate from the list of certificates.
b. Click Add Root Certificate. The Add Certificate screen is displayed.

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Add Certificate Screen
c. Click Browse, select the root_cer.cer file to be loaded, and click Open.
d. Click Load to upload the certificate to the CCS-UC-1. A message confirming
the upload is displayed.
e. Click OK to close the Add Certificate screen. The certificate authority from
where the root-cer certificate was downloaded appears in the list of trusted
certificate authorities.
f. Navigate to SIP Calling > Select Trusted Certificate Authorities and select
the certificate authority (from where the root_cer.cer certificate was
downloaded) from the list of certificate authorities.

10 •CCS-UC-1: Crestron Mercury with Skype for Business Configuration Guide – DOC. 8256A
Skype for Business Configuration
This section describes the SFB configuration necessary to integrate the Crestron device as
a SFB Endpoint. It is assumed that the general installation and basic SFB configuration has
already been administered.
Configure Host A Record
Configure an A record in the DNS server for “lyncdiscoverinternal.<domain>.com” that
points to the front end server’s IP Address.
Configure Host A Record

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Lyncdiscoverinternal Properties Window

12 •CCS-UC-1: Crestron Mercury with Skype for Business Configuration Guide – DOC. 8256A
Configure a Crestron Mercury SfB User
Configure a user in the SfB Control Panel.
NOTE: A user has to be configured in the Active Directory prior to this configuration.
Skype for Business, User Configuration

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Configure the PSTN Gateway
Configure a PSTN Gateway on Skype for Business for PSTN calls.
Skype for Business Server 2015, Topology Builder

14 •CCS-UC-1: Crestron Mercury with Skype for Business Configuration Guide – DOC. 8256A
Define New IP/PSTN Gateway, Define the PSTN Gateway FQDN
Define New IP/PSTN Gateway, Define the IP Address

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Define New IP/PSTN Gateway, Define the Root Trunk

16 •CCS-UC-1: Crestron Mercury with Skype for Business Configuration Guide – DOC. 8256A
Configure the Dial Plan
Configure dial plan and normalization rules for number translation.
Skype for Business, Voice Routing, Dial Plan Configuration