Cisco Systems OL-8978-02 Analog Trunk Gateway, Digital Trunk Gateway, FXS Interface Features

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Chapter 55 Configuring a VoIP Network

Understanding How a VoIP Network Works

Table 55-1 24-Port FXS Analog Interface Module Features (continued)

Digital Signal Processing Per Port

Line echo cancellation (32 ms)

Impedance (600 ohms)

Programmable analog gain, signaling timers

Fax pass-through

SPAN2 or port mirroring support

FXS Interface Features

Address signaling formats: In-band DTMF

Signaling formats: Loop start

Ringing tone: Programmable

Ringing voltage: Programmable, based on country

Ringing frequency: Programmable, based on country

Distance: 500-ohms maximum loop

1.DTMF = dual tone multifrequency

2.SPAN = Switched Port Analyzer

Analog Trunk Gateway

The Cisco access analog trunk gateways allow the IP PBX to connect to the PSTN or PBX. The gateway supports up to eight trunks to the PSTN and appears like a phone to the trunk lines coming from the PSTN. Using this gateway, the IP PBX places an IP call through the PSTN. Similar to the analog station gateway, the analog trunk gateway provides line echo cancellation and dual tone multifrequency (DTMF) tone generation and detection. The analog trunk gateway does not provide the ring voltage as it is not connected to the POTS end devices such as the POTS phones or fax machines. The analog trunk gateway requires an IP address, is registered with Cisco CallManager in its domain, and is managed by Cisco CallManager.

To configure the analog trunk gateways, refer to the documentation that shipped with the gateway.

Digital Trunk Gateway

The Catalyst 6500 series 8-port T1/E1 PSTN interface module can support both digital T1/E1 connectivity to the PSTN or transcoding and conferencing. The module requires an IP address, is registered with Cisco CallManager in its domain, and is managed by Cisco CallManager.

The module software is downloaded from a TFTP server. Depending upon which software you download, the ports can serve as the T1/E1 interfaces or the ports support transcoding and conferencing. The transcoding and conferencing functions are mutually exclusive. For every transcoding port in use, one less conferencing port is available and vice versa.

To configure the 8-port T1/E1 PSTN interfaces, see the “Configuring VoIP on a Switch” section on page 55-10. The module features are listed in Table 55-2.

Catalyst 6500 Series Switch Software Configuration Guide—Release 8.7

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OL-8978-02

 

 

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Contents A P T E R 55-1Cisco IP Phone 55-255-3 55-4 Analog Station Gateway Access GatewaysCisco CallManager 55-5Digital Trunk Gateway FXS Interface FeaturesAnalog Trunk Gateway 55-6Link Management Digital Signal Processing Per T1/E1 PortConverged Voice Gateway 55-7How a Call Is Made 55-8Switch-to-Phone Connections 55-9Set port inlinepower Set inlinepower defaultallocation Voice-Related CLI CommandsCLI Commands Ethernet Module1 WS-X6608-T1/E12 WS-X6624-FXS3 Show port inlinepowerConfiguring Per-Port Power Management Show environment power55-11 Task Command Show module mod55-12 Power Management Modes Show version mod55-13 Power Requirements Phone Class Required Power W55-14 Powering Off the Phone Available PowerWall-Powered Phones Phone RemovalPhone Detection Summary High-Availability Support55-16 Set port inlinepower mod/port auto static Setting the Power Mode of a Port or a Group of PortsSetting the Default Power Allocation 55-17Set inlinepower notify-threshold percentage Show port inlinepower mod /port detail55-18 Console show port inlinepower 4/1 detail Displaying the Switch Power Environment for ModulesShow environment power mod Console enable show environment powerUnderstanding the Auxiliary VLANs Configuring the Auxiliary VLANs on Catalyst LAN SwitchesEnter the set port auxiliaryvlan mod/port auxvlanid command 55-20Set port auxiliaryvlan mod /ports vlan Auxiliary Vlan Configuration GuidelinesConfiguring the Auxiliary VLANs Untagged dot1p noneKeyword Action Verifying the Auxiliary Vlan ConfigurationDisabling the Auxiliary VLANs Until an IP Phone is Detected 55-22Configuring the Access Gateways Configuring a Port Voice Interface55-23 Show port voice interface mod /port Displaying a Port Voice Interface ConfigurationDisplaying the FDL Statistics Show port voice fdl mod /portField Description Displaying the Port Configuration for the Individual PortsConsole enable show port voice fdl 7/1-3 Show port mod /portPort T1/E1 Pstn Interface Module 55-26Console show port 55-27 Port FXS Analog Interface Module 55-28All call conference transcode ipaddr Displaying the Active Call InformationShow port voice active mod/port 55-2955-30 Console show port voice activeConsole show port voice active 3/2 Configuring QoS in the Cisco IP Phone Understanding How QoS Works in the Cisco IP Phone55-31 Set port qos mod/ports...trust-ext trusted Configuring QoS in the Cisco IP PhoneSetting the Phone Access Port Trust Mode UntrustedVerifying the Phone Access Port QoS Configuration Configuring a Trusted Boundary to Ensure Port SecuritySetting the Phone Access Port CoS Value 55-33Supported Cisco IP Phones QoS and Cisco IP Phone ConfigurationQoS, Cisco IP Phone, and PC Configuration 55-34Trusted Boundary Configuration Guidelines 55-35Configuring a Trusted Boundary 55-36Verifying a Port’s Trust-Device State Default ConfigurationSpecifying a Cisco IP Phone as the Trust Device 55-37Understanding SmartPorts Macros 55-38SmartPorts-Cisco IP Phone SmartPorts-Cisco Softphone55-39 SmartPorts Guidelines and Restrictions CLI Interface for SmartPorts Command DescriptionCiscoipphone Command Output 55-41Console enable set port macro 3/1 ciscosoftphone vlan Ciscosoftphone Command OutputConsole enable set port macro 3/1 ciscoipphone vlan Detailed SmartPorts StatementsCiscosoftphone Macro Statement How to Use SmartPorts in Your NetworkCiscoipphone Macro Statement Keyword Port TypeSmartPorts Enhancements in Software Release Ciscorouter SmartPorts Template55-44 55-45 Ciscoswitch SmartPorts TemplateCiscodesktop SmartPorts Template Set port macro mod/port ciscodesktop vlan vlan55-46 Ciscoipphone SmartPorts TemplateCiscosoftphone SmartPorts Template Set port macro mod/port ciscosoftphone vlan nativevlanOverview Configuring User-Definable SmartPorts MacrosGlobal SmartPorts Template 55-47Creating User-Defined Macros Using the CLI to Configure User-Definable SmartPorts MacrosConsole enable set macro name videophone 55-48Modifying Existing User-Defined Macros Defining Variables55-49 Using Special Variables Applying a User-Defined Macro55-50 Console enable set port macro 3/2 videophone Console enable set port macro 3/7 videophone55-51 Show macro name nameofmacro show macro all Displaying MacrosDisplaying Macro Variables 55-52Clearing Macros and Macro Variables Clear macro name nameofmacro clear macro all55-53 Displaying Macro Port Mappings Show macro map all name nameofmacro port mod/port55-54 Configuring a Macro within a Macro Console enable show macro map port 3/255-55 55-56

OL-8978-02 specifications

Cisco Systems OL-8978-02 is a comprehensive training curriculum designed to enhance the skills and knowledge of network professionals seeking to advance their careers in network management and security. This curriculum offers a significant focus on Cisco networking technologies and concepts, ensuring that learners are well-equipped to handle the intricacies of modern network environments.

One of the primary features of OL-8978-02 is its in-depth coverage of foundational networking concepts, which are crucial for effective network administration. The curriculum includes detailed modules on networking fundamentals, such as OSI and TCP/IP models, LAN and WAN architectures, and network protocols. This solid foundation enables learners to understand how different networking components interact and function together, forming the backbone of corporate and enterprise environments.

In addition to foundational knowledge, OL-8978-02 integrates a strong focus on security technologies and practices. Considering the increasing prevalence of cyber threats, the course emphasizes the importance of implementing robust security measures. Participants will learn about firewalls, intrusion prevention systems, VPNs, and other critical security technologies. This focus ensures that learners are prepared to safeguard networks against evolving security threats, a necessity in today’s digital landscape.

Another distinguishing characteristic of the OL-8978-02 curriculum is its emphasis on hands-on experience. The program often includes practical labs and simulations, allowing participants to apply theoretical knowledge in real-world scenarios. This experiential learning approach is pivotal for solidifying skills and boosting confidence in network management tasks.

Furthermore, OL-8978-02 addresses the latest advancements in networking technology, including software-defined networking (SDN) and cloud computing. By introducing emerging technologies, this curriculum ensures that professionals remain ahead of the curve, ready to adapt to the future demands of networking.

Finally, Cisco Systems OL-8978-02 positions itself not only as an educational tool but also as a career catalyst, providing learners with skills that are highly sought after in the IT job market. Upon completion, participants often find themselves well-prepared for various Cisco certifications, which can enhance their employability and professional growth opportunities in a competitive landscape. Through its thorough approach, OL-8978-02 plays a vital role in shaping the next generation of network professionals.
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