This chapter describes how to access Cisco Feature Navigator. It also describes, by Cisco IOS release, available features for Cisco IOS fax and modem services over IP.
Note For more information about this and related Cisco IOS voice features, see the Cisco IOS Voice Configuration Library; including library preface and glossary, other feature documents, and troubleshooting documentation.
Platforms and Cisco IOS Software Images
Use Cisco Feature Navigator to find information about platform support and Cisco IOS software image support. Access Cisco Feature Navigator at http://www.cisco.com/go/fn. You must have an account on Cisco.com. If you do not have an account or have forgotten your username or password, click Cancel at the login dialog box and follow the instructions that appear.
Cisco IOS Fax Services over IP Feature List
Table 1 lists features for Cisco IOS fax services. Features that are introduced in a particular release are available in that and subsequent releases.
Table 1 Cisco IOS Fax Services over IP Features by Cisco IOS Release
Release
Features Introduced
Feature Description
Where Feature is Documented
12.4(4)T
Fax Relay Support for SG3 Fax Machines at G3 Speeds
A fax machine spoofing mechanism on select gateways to force Super Group 3 (SG3) fax machines to automatically fall back to Group 3 (G3) speeds.
•"Configuring Cisco Fax Relay"
•"Configuring T.38 Fax Relay"
12.3(14)T
Configuring Fax Detection for VoiceXML
A new command-line interface structure for configuring Tcl and IVR applications was introduced and affected the commands for configuring this feature.
"Configuring Fax Detection"
12.3(8)T
MGCP Fax Rate Control
MGCP configuration control for setting fax rate.
"Configuring T.38 Fax Relay"
12.3(1)
T.38 Call Agent Driven Fax for Cisco IOS Gateways
Gateway support of MGCP fax package in Call Agent controlled T.38 fax mode. MGCP T.38 Cisco IOS implementation enhanced to receive on a different UDP port than the original voice call to allow interoperability with H.323 networks.
"Configuring T.38 Fax Relay"
12.2(13)T
SIP and H.323 Fax Enhancements
Includes the following:
•SIP and H.323 Fax Pass-Through
•SIP and H.323 T.38 Fax Relay Fallback Protocols
•SIP and H.323 Support of Resource Reservation Protocol
•H.323 Support of Call Admission Control
•H.323 and SIP NSE Support for T.38 Fax Relay
•H.323 and SIP T.38 Fax Relay with Cisco MGCP Gateways
Adds an assortment of fax-transfer enhancements to the Cisco IOS gateway implementations of H.323 and SIP call-control protocols.
•"Configuring Fax Pass-Through"
•"Configuring Cisco Fax Relay"
SIP T.38 Fax Relay
Standardizes the implementation of T.38 over SIP IP networks. T.38 supports the transmission of faxes, in real time, between two standard Group 3 fax terminals communicating over H.323 IP networks.
"Configuring T.38 Fax Relay"
T.38 Fax Relay for VoIP H.323
Provides standards-based fax-relay protocol support that enables Cisco gateways and gatekeepers to interoperate with third-party T.38-enabled gateways and gatekeepers in a mixed-vendor network where real-time Fax Relay capabilities are required.
"Configuring T.38 Fax Relay".
12.2(11)T
G.Clear, GSMFR, and G.726 Codecs and Fax and Modem Passthrough
Adds support for G.726 (32, 24, 16 kbit/s) and GSM-FR (13 kbit/s) voice compression technologies in addition to G.711, G.723.1 and G.729a/b.
•"Configuring Modem Passthrough"
•"Configuring Fax Pass-Through"
12.2(8)T
Fax Detection (Single-Number Voice and Fax)
Provides a single-number voice/fax capability by detecting CNG tone.
"Configuring Fax Detection".
MGCP Based Fax (T.38) and DTMF Relay
Provides a standardized method of supporting reliable fax transmission in an MGCP network.
"Configuring T.38 Fax Relay".
12.2(2)XB
Fax Detection for VoiceXML
Provides single number voice and fax services on VoiceXML-enabled platforms.
"Configuring Fax Detection"
12.1(5)T
SIP T.37 and Cisco Fax
Adds support for T.37 and Cisco fax with SIP.
"Configuring T.37 Store-and-Forward Fax"
T.37 Store and Forward Fax
Supports provision of a single number for subscriber voice-mail and fax access; also supports real-time fax fallback to store-and-forward fax.
"Configuring T.37 Store-and-Forward Fax"
12.1(3)T
Fax Relay Packet Loss Concealment
Enhances fax relay robustness over a VoIP network.
"Configuring T.38 Fax Relay"
T.38 Fax Statistics
Provides more detailed statistics and a fax success indicator for T.38 (fax relay) calls for access servers
"Configuring T.38 Fax Relay"
12.1(3)X1
T.37/T.38 Fax Gateway
Supports T.38 fax relay and T.37 fax store-and-forward using a voice-feature card.
"Configuring T.38 Fax Relay"
"Configuring T.37 Store-and-Forward Fax"
12.0(7)T
Extended Simple Mail Transfer Protocol (ESMTP) Accounting in Store and Forward Fax
Enables collection of accounting information about fax services as part of an SMTP session.
"Configuring T.37 Store-and-Forward Fax"
Cisco IOS Modem Services over IP Feature List
Table 2 lists features for Cisco IOS modem services. Features that are introduced in a particular release are available in that and subsequent releases.
Table 2 Cisco IOS Modem Services over IP Features by Cisco IOS Release
Release
Features Introduced
Feature Description
Where Feature is Documented
12.4(4)T
Cisco Modem Relay
Implements non-negotiated, bearer switched modem relay (gateway-controlled) on select gateways, enabling V.34 modem traffic to be reliably transported.
"Configuring Cisco Modem Relay"
12.2(11)T
G.Clear, GSMFR, and G.726 Codecs and Fax and Modem Passthrough
Adds support for G.726 (32, 24, and 16 kbit/s) and GSM-FR (13 kbit/s) voice compression technologies in addition to G.711, G.723.1 and G.729a/b.
"Configuring Modem Passthrough"
Modem Relay Support on VoIP Platforms
Voice gateway support of modem relay
"Configuring Cisco Modem Relay"
12.1(3)T
Modem Passthrough over VoIP
Provides the transport of modem signals through a packet network by using pulse code modulation (PCM) encoded packets
"Configuring Modem Passthrough"
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Platforms and Cisco IOS Software Images
