Specifications

CHAPTER
23-1
Cisco Unity Express Voice-Mail and Auto-Attendant CLI Administrator Guide for 3.0 and Later Versions
OL-14010-09
23
Configuring Your Cisco IOS Gateway for
T.37 On-Ramp and Off-Ramp Fax Support
This appendix contains the following information pertaining to the configuration of your Cisco IOS
Gateway for T.37 On-Ramp and Off-Ramp fax support:
• “Deployment Scenarios” section on page 1
• “Configuration Options” section on page 4
• “Fax Feature Benefits and Limitations” section on page 10
• “Configuring Your Cisco IOS Gateway for T.37 On-Ramp and Off-Ramp Fax Support” section on
page 12
Deployment Scenarios
To integrate fax functionality, you must use a Cisco IOS fax gateway for both incoming and outgoing
calls. You can use the same or different machines for these gateways. However:
• The fax gateway for inbound fax calls (On-ramp or Fax Detection application) must run on the
originating gateway.
• The fax gateway for outbound calls (Off-ramp) must run on terminating gateway.
Figure 23-1 and Figure 23-2 show examples of deployment scenarios respectively with
Cisco Unified Communications Manager Express (Cisco Unified CME, formerly know as
Cisco Unified CallManager Express) and Cisco Unified Communications Manager (formerly know as
Cisco Unified CallManager). In both scenarios:
• The Cisco IOS Gateway sends mime-encoded faxes over SMTP to Cisco Unity Express (CUE).
• Cisco Unity Express sends VPIM-encoded voice messages or faxes over SMTP to another
Cisco
Unity Express node in the network.
• Cisco Unity Express sends VPIM-encoded voice messages or faxes over SMTP to a Cisco Unity
server in the network.