Integrating Cisco Unity Express 3.x with Cisco Unified Communications Manager Express 7.0
Important considerations for integration between Cisco CME and CUE:
- IP connectivity must be enabled between CME and CUE
- G711Mu Law must be used, since Unity Express does not support any other codecs
To enable communication between Cisco Communications Manager Express and Cisco Unity Express, a dial-peer must be configured in CME. The following configuration provides the requirements on the CME side for CUE voicemail integration. The voicemail pilot is defined, and one DN configured to forward calls to voicemail in CFB and CFNA scenarios (note that the CUE initialization wizard does this anyway, so strictly speaking it is not absolutely necessary). In this example, 8888 is used as the pilot. Typically, the pilot number should not be part of the in-dial range; best practice is to instead configure a translation pattern for off-net voicemail access.
dial-peer voice 999 voip
  destination-pattern 8888
  session protocol sipv2
  session target ipv4:192.168.255.98
  dtmf-relay sip-notify
  codec g711ulaw
  no vad
!
telephony-service
  voicemail 8888
!
ephone-dn 1
  call-forward busy 8888
  call-forward noan 8888 timeout 10
Next, configure the Message Wait Indicator on/off numbers.
ephone-dn 192
  number 881....
  mwi on
ephone-dn 191
  number 882....
  mwi off
At this point, assuming the GUI is accessible and the previous steps have been completed, the initialization wizard can be run on CUE. The CME GUI must be up and running if you intend on using the wizard, since CUE connects to CME via the GUI to import users and configuration. Configure usernames under each ephone before running the wizard; this field influences the import from CME to CUE. CUE will only attempt to import DNs with names configured. In configuration terms:
ephone 1
  username Accounts
ephone 2
  username Sales
The CUE initialization wizard can now be run. The wizard will import configuration parameters such as MWI and, importantly, users, creating mailboxes and providing CUE/CME integration.
