How to Integrate Exchange UM Voicemail into Cisco IP Phones

I am working with a client who is using Cisco CUCM with Cisco Phones, along with Microsoft Exchange 2007 voice mail on the UM , but when you divert the phone to voicemail you are not prompted with the users voicemail prompt – you are prompted with the Subscriber access greeting of “ Welcome , you are connected to Microsoft exchange ,…etc )

Usually when you call someone and there is no answer then you are transferred to the Pilot number, the extension of the person you are calling is sent also in the request so that you would be directly transferred to the users voice mail not to the Welcome greeting.

This Problem Happens when Diverted Calls are not accepted because both sides cannot agree on DTMF handling , the MTP is important, because it deals with differences in how DTMF is signaled between the phones and gateways and the sip trunk

Just make sure the following on the Cisco SIP trunk:

1. Accept Out-of-Dialog REFER
2. Accept unsolicited Notification
3. Accept Replaces Header
4. Have the SIP trunk configured to use MTP, once I’d configured MTP and MRG/MGRL

The changes detailed below are based on a new installation of Call Manager 5. As this environment been created for the purpose of testing the integration between platforms, it contains only minimum configuration. The required Changes are with:

·         Media Termination Point (MTP)

·         Changes to security profile

Media Termination Point: The Cisco Call Manager installation builds the default media termination point.

Media Resource Group: Create a media resource group “MRG_CCM5” and add the media resource (MTP) to the group. Multicast is not required.

Media Resource Group List: Create a media resource group list “MRGL_CCM5” and add the media resource group “MRG_CCM5” to the list.

Device Pools: By default Cisco Call Manager creates the “default” device pool. Open the device pool “default” and select the new media resource group list “MRGL_CCM5”.

SIP Trunk Security Profiles: Copy the “Non Secure SIP Trunk Profile” to “E2K7 Non Secure SIP Trunk Profile” and enable “Accept Unsolicited Notifications”.

Partition Configuration: Create a Class of Control Partition “Local”.

Calling Search Space: Create a Class of Control Calling Search Space “CCS_Local” and add the Partition “Local” to the calling search space.

Trunk Configuration:

Trunk Configuration General	Setting
Device Name	E2K7
Description	Exchange UM
Device Pool	Default
Call Classification	Use System Default
Media Resource Group List	<None>
Location	Hub_None
AAR Group	<None>
Packet Capture Mode	None
Packet Capture Duration	0
Media Termination Point Required	Enabled
Retry Video Calls as Audio	Disabled
Transmit UTF-8 for Calling Party Name	Disabled
Unattended Port	Disabled
MLPP Domain Information	<None>

Trunk Configuration Call Routing Information	Setting
Inbound Calls
Significant Digits	All
Connected Line ID Presentation	Default
Connected Name Presentation	Default
Calling Search Space	CCS_Local
ARR Calling Search Space	<None>
Prefix DN	<Blank>
Redirecting Diversion Header Delivery	Disabled
Outbound Calls
Calling Party Selection	First Redirect Number
Connected Line ID Presentation	Default
Connected Name Presentation	Default
Caller ID DN	<Blank>
Caller Name	<Blank>
Redirecting Diversion Header Delivery	Enabled

Trunk Configuration SIP Information	Setting
Destination Address	<IP Address of E2K7 Server>
Destination Address is an SRV	Disabled
Destination Port	5060
MTP Preferred Originating Codec	711alaw
Presence Group	Standard Presence Group
SIP Trunk Security Profile	E2K7 Non Secure SIP Trunk Profile
Rerouting Calling Search Space	<None>
Out-of-Dialog Refer Calling Search Space	<None>
SUBSCRIBE Calling Search Space	Default
SIP Profile	Standard SIP Profile
DTMF Signalling Method	No Preference

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