Archive for the ‘Uncategorized’ Category

Lync Mobile Round-Up

December 20, 2011 1 comment

Now that all the Lync 2010 Mobile clients have been released in the respective “App Stores”/”Marketplaces” etc I find myself answering questions around how you get the client, when it will work in your environment and what is required. This by no means is a representation of the work that I have done around Lync Mobile but more of a group of resources I use to understand what is new, get a Lync environment configured for mobility and get those beloved mobile clients!!!

This blog will be updated regularly when I see cool new tutorials or quick tips come out!


MCX = Mobility Service

Autodiscover = Not to be confused with Exchange Autodiscover, the and tell the Lync Mobile client where to reach the mobility service.

APNS = Apple Push Notification Service = The Apple Push Notification Service is utilized on iOS devices to receive push notification incoming Instant Messages.

MPNS = Microsoft Push Notification Service = Same as Apple Push Notification Service but is utilized for Windows Phone 7.5 devices

Microsoft Lync Server Push Notification Service = The Cloud based solution that is leveraged by the MCX service to send push notifications to iOS and WP devices.

Recommended Reading:

Microsoft Lync Server 2010 Mobility Guide

Lync Server 2010 Cumulative Update 4


End to End Configuration Guides:

Jeff Schertz’ Blog: Deploying Lync 2010 Mobility

Jeff Gillett’s Blog: Deploying the Lync 2010 Mobility Service Step-by-Step


Quick Tips:

Matthew Landis Windows PBX Blog


Get the Apps Here!:

Lync Windows Phone App:

Lync iPad App:

Lync iPhone App:

Lync Android App:


Feature Comparison Chart:


Lync Partner Finder:



Categories: Uncategorized

Lync Music on Hold for Aries and other phones

November 22, 2011 4 comments

Music On Hold for Lync is provided by a client side policy (CsClientPolicy) and is enabled by setting the EnableClientMusicOnHold value to True, this is by default set to False for the Global Policy. To change this you can run the following PowerShell command:

Set-CsClientPolicy Global –EnableClientMusicOnHold:$true

This is a great feature for those that use the Lync client, but unfortunately this does not provide MoH for Aries phones (Polycom CX600, Aastra 6725iP). Fortunately we can supplement the capabilities of the Lync with that of gateway vendors. In our situation, we were already using AudioCodes M1000 MSBGs as the Session Border Controller (SBC). We noticed the gateways had a configuration under Protocol Configuration – SIP Advanced Paramaters — Supplementary Services called “Enable Hold to ISDN” which meant we knew it would play at least a tone to users that called in via POTS or T1/E1 lines, but we wanted this to also be enforced for IP2IP calls as the calls would originate from a SIP trunk.

After some digging and a couple emails around we identified a parameter that needs to be added to the INI file called “PlayHeldToneForIP2IP”. When set to 1 this enabled that same tone to be played when a user was placed on hold over the SIP trunk. To be a little more technical, when the party that initiates the hold a SIP re-INVITE is sent to the gateway with a=inactive in the SDP. When the gateway detects this it injects the audio stream. This file can be replaced with a pre-recorded voice prompt once converted to a Prerecorded Tone (PRT) file. This can be accomplished with the TrunkPack Downloadable Conversion Utility (DConvert) –

This proved to be the hardest part for us as the WAV file we had was not sampled correctly (only 8000kz/mono/8bit or 16000kz/mono/16bit Linear PCM files are supported). I used Audacity ( Once we got the sampling correct, the rest was pretty easy:

We launched the Dconvert.exe program

Select “Process Prerecorded Tone file(s).

Select Add File(s)… Locate the file you want to convert.

Once you have the file in the list, double click it to bring up the File Data dialog box. Set the fields as follows:

Type: acOnHoldTone

Coder: G711Alaw_64 or G711ulaw – Do not use LinearPCM

Close the File Data Box and select Make File(s).

Once you have the output file in DAT format, simply upload the DAT file to the gateway using the Web interface.

Navigate to Maintenance – Load Ancillary files

Under Prerecorded Tones select the file and upload. Note at the top of the window (not the popup) if the upload was successful or not.


Once the file has been uploaded and the AudioCodes rebooted, you should begin to experience Music On Hold on any device provided by the gateway!

Categories: Uncategorized