Specifications

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Cisco Unity Express Voice-Mail and Auto-Attendant CLI Administrator Guide for 3.0 and Later Versions
OL-14010-09
Chapter 23 Configuring Your Cisco IOS Gateway for T.37 On-Ramp and Off-Ramp Fax Support
Configuration Options
• Using the Off-Ramp application with either:
– On-ramp application
– Fax detect application
Using Separate DIDs for Fax
Using a separate DID for the fax, enables you to configure a unique extension that can be used
exclusively for sending faxes to the Cisco Unity Express in either Cisco Unified CME or Cisco Unified
Communications Manager mode. To use this option, you must configure an ephone-dn or extension for
the fax DID on the Cisco Unified CME or Cisco Unified Communications Manager. This enables:
• Voice calls to be forwarded to the outbound dial-peer for the On-ramp process
• Fax calls (based on DID) to be directly routed to the outbound dial-peer for the On-ramp process
On the Cisco Unity Express node, you must:
• Configure the inbound fax gateway.
• Enable the mailbox to receive the faxes from a fax gateway.
• Assign the fax number to this user to create a separate fax DID.
The configuration steps are exactly the same as for voice mailboxes except that you must also enable the
mailbox to receive faxes from a fax gateway and create a fax number for the user. The user can login to
this mailbox using a voice number. Logging in to a mailbox using the fax DID is not supported.
You can use separate DIDs for Fax with either:
– Connect First Mode
– Listen First Mode
Using a Single DID for Voice and Fax
When configuring a single DID number for the voice and fax, use the Primary extension for the
subscriber. All the fax calls are routed to the fax detect application on the fax gateway. Then the fax
gateway either:
• Routes the call either to a MMoIP dial-peer if it is a fax call.
• Routes the call to voice dial-peer.
On the Cisco Unity Express, you must:
• Enable a mailbox to receive faxes from a fax gateway
• Configure the fax number as the extension of the user.
If no fax number is configured, by default the subscriber’s extension is used.
You can use single DID for voice and fax with either:
– Connect first mode
– Listen first mode