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Configuring a talkAssure™ SIP Trunk for Microsoft® Lync® 2013

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This guide details the configuration steps for connecting Microsoft Lync 2013 to Telappliant’s network using a Telappliant talkAssure SIP trunk. The guide makes the assumption that your Lync topology is already prepared for Enterprise Voice with a Mediation server deployed. Those preliminary steps will not be covered in this guide. The guide also makes the assumption that the person configuring the on-premise installation has a basic understanding of Microsoft Lync and Lync administration.1

Telappliant is a Microsoft Partner and participant in the Microsoft Unified

Open Interoperability program. Our infrastructure and solution has been

tested and verified as compatible with Microsoft Lync 2013.

OVERVIEWConfiguring connectivity between Telappliant and your on-premise Lync 2013 installation

involves the following high level steps:

1. Order the connectAssure SIP trunk from Telappliant.

2. Modify your firewall to allow communication between Telappliant and your Mediation server.

3. Configure the Lync topology and publish.

4. Create a new route in the Lync Server Control Panel (LSCP).

5. Create a new dial plan so outbound calls are sent to your new SIP trunk.

6. Enable Enterprise Voice for your users and configure the users with the appropriate DIDs (as

assigned to you by Telappliant).

1 Telappliant’s status as a provider of Microsoft Lync SIP trunking services can be found online at

http://technet.microsoft.com/en-us/lync/fp179863#tab=1

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STEP 1: ORDER YOUR SIP TRUNK FROM TELAPPLIANTSIP trunking enables organisations to utilise a single Internet connection for making and receiving

multiple concurrent VoIP telephone calls. It offers high flexibility, improved business continuity and

substantial cost savings over legacy telephone or ISDN lines.

Telappliant’s talkAssure SIP trunks offer high levels of scalability and resiliency, backed up by one

of the UK’s largest business VoIP networks with more than a decade of Internet telephony

experience. talkAssure SIP trunking has been tested and verified as compatible with Microsoft

Lync.2

To order your talkAssure SIP trunk visit www.telappliant.com/sip-trunking or call our

experienced consultants on 0345 004 4040.

STEP 2: CONFIGURE YOUR FIREWALL TO ALLOW TRAFFIC TO YOUR MEDIATION SERVERThe ports in the table below need to be allowed inbound and outbound access to your Mediation

server. Ensure the firewall rules you create are applied to the external public IP address that your

Mediation Server or Lync Front End (If the Mediation role is co-located on the same server) is

using. This will be your Network Translated Address (NAT).

Note: A stand-alone pool is the Microsoft recommendation when deploying SIP trunking.

Inbound Traffic to and from the Mediation Server

Telappliant IP address

Protocol Port(s)

SIP signalling path 178.22.8.152 TCP 5060

Media path 178.22.11.245 UDP + TCP 49,000 - 65,536

2 Telappliant’s status as a provider of Microsoft Lync trunking services can be found online at

http://technet.microsoft.com/en-us/lync/fp179863#tab=1

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STEP 3: CONFIGURE THE LYNC TOPOLOGY AND PUBLISH1. Open the Lync topology builder and navigate to your Mediation Pool(s).

Right click the desired pool and select Edit Properties.

2. Enable TCP by checking the Enable TCP port box and then change the listening port to

‘5060’. This is the port Telappliant is advertising its SIP trunk on.

3. Right click PSTN Gateways and select New IP/PSTN Gateway.

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4. Enter the IP address of the Telappliant Gateway provided.

5. Click Next and keep the default settings.

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6. Give the trunk a name and ensure you select the appropriate Mediation server in the drop-down

menu. Likewise ensure the Listening Port for IP/PSTN Gateway is set to ‘5060’ and the

Associated Mediation Server to port ‘5060’. Lastly, make sure SIP Transport Protocol is set to

‘TCP’, and click Finish.

7. The topology builder will now look similar to Figure 6. The PSTN gateway will be present, along

with the SIP trunk to Telappliant.

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8. Right click on the new trunk, select edit and enter the Alternate Media IP Address.

9. Now publish the Lync topology.

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STEP 4: CREATE A NEW ROUTE IN THE LYNC SERVER CONTROL PANEL1. Open the Control Panel, select voice routing, and then select Route. Select New to create a

new route.

2. Leave the pattern with the default settings and give the new route a name.

3. Select Add under Associated Trunks and add the PSTN Gateway published earlier.

4. Under Associated PSTN Usages click on Select. Select ‘Long Distance’ from the list and click

OK to complete.

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5. Click OK again to commit the change

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STEP 5: CREATE A NEW DIAL PLAN AND EDIT VOICE POLICY SO OUTBOUND CALLS ROUTE TO TELAPPLIANT1. From Voice Routing select Dial Plan, then double-click the Global dial plan to edit it.

2. Remove the Prefix All default rule.

3. Select New to open the New Normalization Rule wizard.

4. Give the rule a name.

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5. In the drop-down box ensure Length is set to ‘Exactly’. The value displayed to the right should

be set to’ 11’.

6. Digits to remove should be set to ‘1’.

7. Enter ‘+44’ under Digits to add.

8. Test the rule using the Dialled number to test

9. Click OK and Commit the changes.

10. Select Voice Policy and double-click the Global Policy.

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11. Under Associated PSTN Usages click Select and select ‘Long Distance’ from the Select

PSTN Usage Record menu.

12. Click OK and Commit All changes.

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13. Select Test Voice Routing, click New and create a new Voice Routing Test Case. Complete

the relevant fields similar to the example in Figure 14 and the Test result should show ‘Passed’.

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STEP 6: ENABLE USERS FOR ENTERPRISE VOICE AND ASSIGN A DID1. Click on Users and select a user that is not enabled for Enterprise Voice. Note the user in the

example shown in Figure 15 has their Telephony settings set to the default ‘PC-to-PC only’. This

needs to be changed to ‘Enterprise Voice’.

2. Double click the user to edit.

3. Select ‘Enterprise Voice’ in the Telephony drop-down field.

4. In the Line URI field, enter the users DID in the format.

5. Commit the changes to complete.