Cisco 1751V Specifications

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ContentsxCisco 1751 Router Software Configuration GuideOL-1070-01Assigning IP Address to Network Interface 7-3Configuring IPX Routing over IEEE 802.1

xlCisco 1751 Router Software Configuration GuideOL-1070-01Related Commandsshow call active voiceshow dial-peer voiceshow num-expshow voice portshow c

xliCisco 1751 Router Software Configuration GuideOL-1070-01Sample DisplayThe following is sample output from the show controllers voice command:route

xliiCisco 1751 Router Software Configuration GuideOL-1070-01Tx Message 4:packet_length 66 channel_id 0 packet_id 198 process id1 0xFECE process id2 0

xliiiCisco 1751 Router Software Configuration GuideOL-1070-01Syntax DescriptionThis command contains no arguments or keywords.Command ModePrivileged

xlivCisco 1751 Router Software Configuration GuideOL-1070-01Sample DisplayThe following is sample output from the show diag command:router# show diag

xlvCisco 1751 Router Software Configuration GuideOL-1070-01show dial-peer voiceTo display configuration information for dial peers, use the show dial

xlviCisco 1751 Router Software Configuration GuideOL-1070-01The following is sample output from the show dial-peer voice command for a VoIP dial peer

xlviiCisco 1751 Router Software Configuration GuideOL-1070-01Related Commandsshow call active voiceshow call-history voiceshow num-expshow voice port

xlviiiCisco 1751 Router Software Configuration GuideOL-1070-01ExampleThe following example tests whether the telephone extension 57681 can be reached

xlixCisco 1751 Router Software Configuration GuideOL-1070-01Syntax DescriptionCommand ModePrivileged EXEC.Usage GuidelinesUse the show num-exp privil

xiCisco 1751 Router Software Configuration GuideOL-1070-01About This GuideThis section discusses the objectives, audience, conventions, and organizat

lCisco 1751 Router Software Configuration GuideOL-1070-01Syntax DescriptionThis command has no arguments or keywords.Command ModePrivileged EXEC.Usag

liCisco 1751 Router Software Configuration GuideOL-1070-01Syntax DescriptionCommand ModePrivileged EXEC.Usage GuidelinesUse the show voice port privi

liiCisco 1751 Router Software Configuration GuideOL-1070-01Sample DisplayThe following is sample output from the show voice port command for an E&

liiiCisco 1751 Router Software Configuration GuideOL-1070-01The following is sample output from the show voice port command for an FXS voice port:rou

livCisco 1751 Router Software Configuration GuideOL-1070-01Echo Cancellation Whether or not echo cancellation is enabled for this port.Hook Flash Dur

lvCisco 1751 Router Software Configuration GuideOL-1070-01Related Commandsshow call active voiceshow call history voiceshow dial-peer voiceshow num-e

lviCisco 1751 Router Software Configuration GuideOL-1070-01shutdown (voice-port configuration)To take the voice ports for a specific VIC offline, use

lviiCisco 1751 Router Software Configuration GuideOL-1070-01Syntax DescriptionDefaultloop-start for FXO and FXS interfaces. wink-start for E&M in

lviiiCisco 1751 Router Software Configuration GuideOL-1070-01ExampleThe following example configures ground-start signaling, which means that both si

lixCisco 1751 Router Software Configuration GuideOL-1070-01snmp-server enable trapsTo enable the router to send SNMP traps, use the snmp-server enabl

xiiCisco 1751 Router Software Configuration GuideOL-1070-01Two master indexes provide indexing information for the Cisco IOS software documentation s

lxCisco 1751 Router Software Configuration GuideOL-1070-01The following example enables the router to send all traps to the host myhost.cisco.com usi

lxiCisco 1751 Router Software Configuration GuideOL-1070-01If you are managing the equipment with an SNMP manager (such as Maestro), enable this comm

lxiiCisco 1751 Router Software Configuration GuideOL-1070-01ExampleThe following example sets the initial digit timeout value to 15 seconds:voice por

lxiiiCisco 1751 Router Software Configuration GuideOL-1070-01Related Commandstimeouts initialtimingtimingTo specify timing parameters (other than tho

lxivCisco 1751 Router Software Configuration GuideOL-1070-01DefaultThe default values for the timing keywords/arguments are listed in Table 10.Comman

lxvCisco 1751 Router Software Configuration GuideOL-1070-01ExampleThe following example configures the clear-wait duration to 300 milliseconds:voice

lxviCisco 1751 Router Software Configuration GuideOL-1070-01Syntax DescriptionDefault1Command ModeVoice-port configuration.Usage GuidelinesUse the ty

lxviiCisco 1751 Router Software Configuration GuideOL-1070-01ExampleThe following example selects type 3 as the interface type for your voice port:vo

lxviiiCisco 1751 Router Software Configuration GuideOL-1070-01Syntax DescriptionDefaultNo voice-port mode is configured.Command ModeGlobal configurat

iCisco 1751 Router Software Configuration GuideOL-1070-015VoIP Debug CommandsThis chapter documents debug commands that are new or specific to the Ci

xiiiCisco 1751 Router Software Configuration GuideOL-1070-01Figure 1 Cisco IOS Software Documentation ModulesModule FCConfigurationGuideModule FRComm

iiCisco 1751 Router Software Configuration GuideOL-1070-01Caution Debugging is assigned a high priority in your router CPU process, and it can render

iiiCisco 1751 Router Software Configuration GuideOL-1070-01Usage GuidelinesThe debug voip ccapi inout EXEC command traces the execution path through

ivCisco 1751 Router Software Configuration GuideOL-1070-01The following output shows the called party is alerted, a codec is negotiated, and voice pa

vCisco 1751 Router Software Configuration GuideOL-1070-01The following output shows that disconnection is generated from the calling party and that c

viCisco 1751 Router Software Configuration GuideOL-1070-01Sample DisplayThe following output shows the DSP timestamp and the router timestamp for eac

viiCisco 1751 Router Software Configuration GuideOL-1070-01Syntax DescriptionUsage GuidelinesUse the debug vpm port command to limit the debug output

viiiCisco 1751 Router Software Configuration GuideOL-1070-01Sample DisplayThe following output shows that a ring is detected and that the router wait

ixCisco 1751 Router Software Configuration GuideOL-1070-01The following output shows that the higher layer code accepts the call, requests addressing

xCisco 1751 Router Software Configuration GuideOL-1070-01The following output shows the voice quality statistics collected periodically:vcsm_process_

xiCisco 1751 Router Software Configuration GuideOL-1070-01debug vtsp dspUse the debug vtsp dsp EXEC command to show messages from the digital signal

xivCisco 1751 Router Software Configuration GuideOL-1070-01Organization Table 1 describes the contents of each chapter in this document.Command Synta

xiiCisco 1751 Router Software Configuration GuideOL-1070-01Sample DisplayThe following example shows sample output from the debug vtsp error command,

xiiiCisco 1751 Router Software Configuration GuideOL-1070-01debug vtsp portTo observe the behavior of the VTSP state machine on a specific voice port

xivCisco 1751 Router Software Configuration GuideOL-1070-01Sample DisplayThe following example shows sample output from the debug vtsp port 0/1 and d

xvCisco 1751 Router Software Configuration GuideOL-1070-0121:59:16: Final pcn:, poa:, dial_string:21:59:16: vtsp_get_dialpeer_tag: tag = 22121:59:16:

xviCisco 1751 Router Software Configuration GuideOL-1070-0121:59:38: vtsp:[0/1:5505, S_CONNECT, E_DSP_DTMF_DIGIT_BEGIN]21:59:38: act_report_digit_beg

xviiCisco 1751 Router Software Configuration GuideOL-1070-01Sample DisplayThe following output shows that the call has been accepted and that the sys

xviiiCisco 1751 Router Software Configuration GuideOL-1070-01The following output shows that the call proceeded and that DTMF was disabled:*Nov 30 00

xixCisco 1751 Router Software Configuration GuideOL-1070-01The following output shows that the DSP channel was closed and released:*Nov 30 00:46:30.2

xxCisco 1751 Router Software Configuration GuideOL-1070-01debug vtsp toneTo display debug messages showing the types of tones generated by the VoIP g

xxiCisco 1751 Router Software Configuration GuideOL-1070-01Sample DisplayThe following example shows sample output from the debug vtsp vofr subframe

xvCisco 1751 Router Software Configuration GuideOL-1070-01Cisco Connection OnlineCisco Connection Online (CCO) is Cisco Systems’ primary, real-time s

xxiiCisco 1751 Router Software Configuration GuideOL-1070-01

iCisco 1751 Router Software Configuration GuideOL-1070-016Routing Between Virtual LANs OverviewThis chapter provides an overview of virtual LANs (VLA

iiCisco 1751 Router Software Configuration GuideOL-1070-01• Security• Broadcast Control• Performance• Network Management• Communication Between VLANs

iiiCisco 1751 Router Software Configuration GuideOL-1070-01SecurityVLANs also improve security by isolating groups. High-security users can be groupe

ivCisco 1751 Router Software Configuration GuideOL-1070-01strips header and forwards the frame to interfaces that match the VLAN color. If you are us

vCisco 1751 Router Software Configuration GuideOL-1070-01• Sharing resources between VLANs• Load Balancing• Redundant Links• Addressing • Segmenting

viCisco 1751 Router Software Configuration GuideOL-1070-01

iCisco 1751 Router Software Configuration GuideOL-1070-017Configuring Routing Between VLANs with IEEE 802.1Q EncapsulationThis chapter describes the

iiCisco 1751 Router Software Configuration GuideOL-1070-01To route AppleTalk over IEEE 802.1Q between VLANs, you need to customize the subinterface t

iiiCisco 1751 Router Software Configuration GuideOL-1070-01Configuring IP Routing over IEEE 802.1QIP routing over IEEE 802.1Q extends IP routing capa

xviCisco 1751 Router Software Configuration GuideOL-1070-01

ivCisco 1751 Router Software Configuration GuideOL-1070-01Configuring IPX Routing over IEEE 802.1QIPX Routing over IEEE 802.1Q VLANs extends Novell N

vCisco 1751 Router Software Configuration GuideOL-1070-01IEEE 802.1Q Encapsulation Configuration ExamplesThis section provides configuration examples

viCisco 1751 Router Software Configuration GuideOL-1070-01VLAN CommandsThis section provides an alphabetical listing of all the VLAN commands that ar

viiCisco 1751 Router Software Configuration GuideOL-1070-01ExampleThe following is sample output from the debug vlan packet output. Router# debug vla

viiiCisco 1751 Router Software Configuration GuideOL-1070-01Command ModePrivileged EXECExampleThe following is sample output from the show vlans comm

iCisco 1751 Router Software Configuration GuideOL-1070-01GLOSSARYAACOMTerm used in G.165, "General Characteristics of International Telephone Co

iiCisco 1751 Router Software Configuration GuideOL-1070-01DSPDigital signal processor. DSP segments the voice signal into frames and stores in voice

iiiCisco 1751 Router Software Configuration GuideOL-1070-01PPBXPrivate branch exchange. Privately-owned central switching office.PCMPulse code modula

ivCisco 1751 Router Software Configuration GuideOL-1070-01TTrunkService that provides quasi-transparent connections between two PBXs, a PBX and a loc

iCisco 1751 Router Software Configuration GuideOL-1070-01INDEXAaccountingper VLAN6-3Quality of Service (QoS) 6-3acc-qos command 4-4addressing, in VLA

iCisco 1751 Router Software Configuration GuideOL-1070-011Voice over IP OverviewVoice over IP (VoIP) enables a Cisco 1751 router (hereafter referred

IndexiiCisco 1751 Router Software Configuration GuideOL-1070-01tasks 2-2configuringCODEC and VAD2-23custom queuing 2-7dial peers 2-9Frame Relay for V

iiiCisco 1751 Router Software Configuration GuideOL-1070-01Indexdial-peer voice command 4-13dial-type command 4-14digital signal processorsee DSPdigi

IndexivCisco 1751 Router Software Configuration GuideOL-1070-01Gground start signaling 1-6, 4-57HH.323 1-1, 1-2hybrid switching environments 6-4Iicpi

vCisco 1751 Router Software Configuration GuideOL-1070-01Indexmanagement 6-3VlanDirector 6-3performance 6-4scalability 6-4security 6-4servicesaccount

IndexviCisco 1751 Router Software Configuration GuideOL-1070-01RTP header compression 2-6weighted fair queuing 2-7RRandom Early Detection 2-2REDsee R

viiCisco 1751 Router Software Configuration GuideOL-1070-01Indextrap message, generating 2-23trap operation, enabling 4-59snmp enable peer-trap poor-

IndexviiiCisco 1751 Router Software Configuration GuideOL-1070-01identifier 6-3isolation between 6-3LAN segmentation 6-5load balancing 6-4monitoring

ixCisco 1751 Router Software Configuration GuideOL-1070-01IndexWREDsee Weighted Random Early Detection

IndexxCisco 1751 Router Software Configuration GuideOL-1070-01

iiCisco 1751 Router Software Configuration GuideOL-1070-01How VoIP Processes a Typical Telephone CallBefore configuring VoIP on your router, it helps

iiiCisco 1751 Router Software Configuration GuideOL-1070-01Analog Compared with DigitalAnalog transmission is not particularly robust or efficient at

THE SPECIFICATIONS AND INFORMATION REGARDING THE PRODUCTS IN THIS MANUAL ARE SUBJECT TO CHANGE WITHOUT NOTICE. ALL STATEMENTS, INFORMATION, AND RECOM

ivCisco 1751 Router Software Configuration GuideOL-1070-01Although it might seem logical from a financial standpoint to convert all calls to low bit-

vCisco 1751 Router Software Configuration GuideOL-1070-01Another handling delay is the time it takes to generate a voice packet. In VoIP, the DSP gen

viCisco 1751 Router Software Configuration GuideOL-1070-01In Cisco’s voice implementations, echo cancellers are enabled using the echo-cancel enable

iCisco 1751 Router Software Configuration GuideOL-1070-012VoIP ConfigurationThis chapter explains how to configure VoIP on your router and contains t

iiCisco 1751 Router Software Configuration GuideOL-1070-01–Make routing and dialing transparent to the user—for example, avoid secondary dial tones f

iiiCisco 1751 Router Software Configuration GuideOL-1070-01In general, edge routers perform the following QoS functions:• Packet classification• Admi

ivCisco 1751 Router Software Configuration GuideOL-1070-01Router(config-if)# ip rsvp bandwidth [interface-kbps] [single-flow-kbps]This command starts

vCisco 1751 Router Software Configuration GuideOL-1070-01• Links slower than 2 MbpsNote Do not use multilink PPP on links greater than 2 Mbps.Multili

viCisco 1751 Router Software Configuration GuideOL-1070-01Configure RTP Header CompressionReal-Time Transport Protocol (RTP) is used for carrying aud

viiCisco 1751 Router Software Configuration GuideOL-1070-01Enable RTP Header Compression on a Serial InterfaceYou need to enable compression on both

iiiCisco 1751 Router Software Configuration GuideOL-1070-01CONTENTSAbout This Guide xiObjectivesxiAudience xiCisco IOS Software Documentation xiOrgan

viiiCisco 1751 Router Software Configuration GuideOL-1070-01Configure Number ExpansionIn most corporate environments, the telephone network is config

ixCisco 1751 Router Software Configuration GuideOL-1070-01 Note You can use a period (.) to represent variables (such as extension numbers) in a tele

xCisco 1751 Router Software Configuration GuideOL-1070-01Figure 3 Dial Peer Call Legs from the Perspective of the Source RouterFigure 4 Dial Peer Cal

xiCisco 1751 Router Software Configuration GuideOL-1070-01POTS dial peer associate a telephone number with a particular voice port so that incoming c

xiiCisco 1751 Router Software Configuration GuideOL-1070-01To complete the end-to-end call between dial peer 1 and dial peer 4 as illustrated in Figu

xiiiCisco 1751 Router Software Configuration GuideOL-1070-01Outbound Dialing on POTS Dial PeersWhen a router receives a voice call, it selects an out

xivCisco 1751 Router Software Configuration GuideOL-1070-01Verifying Your ConfigurationYou can check the validity of your dial peer configuration by

xvCisco 1751 Router Software Configuration GuideOL-1070-01The voice ports support three basic voice signaling types:• FXS—The foreign exchange statio

xviCisco 1751 Router Software Configuration GuideOL-1070-01Verifying Your ConfigurationYou can check the validity of your voice-port configuration by

xviiCisco 1751 Router Software Configuration GuideOL-1070-01Command Task Valid EntriesDefault ValuesStep 1configure terminal Enter the global configu

ContentsivCisco 1751 Router Software Configuration GuideOL-1070-01CHAPTER 2 VoIP Configuration 2-1Prerequisite Tasks 2-1Configuration Tasks 2-2Config

xviiiCisco 1751 Router Software Configuration GuideOL-1070-01Note After you change any voice-port command, we recommend that you cycle the port by us

xixCisco 1751 Router Software Configuration GuideOL-1070-01Verifying Your ConfigurationYou can check the validity of your voice-port configuration by

xxCisco 1751 Router Software Configuration GuideOL-1070-01Troubleshooting TipsIf you are having trouble connecting a call and you suspect the problem

xxiCisco 1751 Router Software Configuration GuideOL-1070-01Note After you change any voice-port command, we recommend that you cycle the port by usin

xxiiCisco 1751 Router Software Configuration GuideOL-1070-01Configure IP Precedence for Dial PeersUse the ip precedence command to give voice packets

xxiiiCisco 1751 Router Software Configuration GuideOL-1070-01To generate a Simple Network Management Protocol (SNMP), use the following commands begi

xxivCisco 1751 Router Software Configuration GuideOL-1070-01Configure VAD for a VoIP Dial PeerTo disable the transmission of silence packets and enab

xxvCisco 1751 Router Software Configuration GuideOL-1070-01–Use RSVP or IP precedence to prioritize voice traffic. –Use compressed RTP to minimize vo

xxviCisco 1751 Router Software Configuration GuideOL-1070-01• MTU size is inherited from the main interface.• IP address for the subinterface is spec

xxviiCisco 1751 Router Software Configuration GuideOL-1070-01Step 8 Click the Up button until this CODEC value is at the top of the list.Step 9 Click

vCisco 1751 Router Software Configuration GuideOL-1070-01ContentsConfigure FXS or FXO Voice Ports 2-15Verifying Your Configuration 2-16Troubleshootin

xxviiiCisco 1751 Router Software Configuration GuideOL-1070-01

iCisco 1751 Router Software Configuration GuideOL-1070-013VoIP Configuration ExamplesThis chapter demonstrates how to configure VoIP in four differen

iiCisco 1751 Router Software Configuration GuideOL-1070-01Figure 1 FXS-to-FXS Connection ExampleConfiguration for Router RLB-1hostname RLB-1! Create

iiiCisco 1751 Router Software Configuration GuideOL-1070-01Configuration for Router RLB-whostname RLB-w! Configure serial interface 0interface serial

ivCisco 1751 Router Software Configuration GuideOL-1070-01Configuration for Router RLB-ehostname RLB-e! Configure serial interface 0interface serial0

vCisco 1751 Router Software Configuration GuideOL-1070-01Configuration for Router RLB-2hostname RLB-2! Create pots dial-peer 2dial-peer voice 2 pots!

viCisco 1751 Router Software Configuration GuideOL-1070-01Figure 2 Linking PBX Users with E&M Trunk Lines ExampleNote This example assumes that t

viiCisco 1751 Router Software Configuration GuideOL-1070-01Router SLC Configurationhostname router SLC!Configure pots dial-peer 3dial-peer voice 3 po

viiiCisco 1751 Router Software Configuration GuideOL-1070-01Figure 3 FXO Gateway to PSTN ExampleNote This example assumes that the company has alread

ixCisco 1751 Router Software Configuration GuideOL-1070-01FXO Gateway to PSTN (PLAR Mode)The following example shows an FXO gateway to PSTN connectio

ContentsviCisco 1751 Router Software Configuration GuideOL-1070-01Linking PBX Users with E&M Trunk Lines 3-5Router SJ Configuration 3-6Router SLC

xCisco 1751 Router Software Configuration GuideOL-1070-01Router SLC Configurationhostname router SLC! Configure pots dial-peer 1dial-peer voice 1 pot

iCisco 1751 Router Software Configuration GuideOL-1070-014VoIP CommandsThis chapter provides an alphabetical listing of all of the VoIP commands that

iiCisco 1751 Router Software Configuration GuideOL-1070-01ip udp checksum Calculate the UDP checksum for voice packets transmitted by the dial peer.m

iiiCisco 1751 Router Software Configuration GuideOL-1070-01A subset of the commands listed are voice-port commands. Different voice signaling types s

ivCisco 1751 Router Software Configuration GuideOL-1070-01acc-qosTo generate an SNMP event if the QoS for a dial peer drops below a specified level,

vCisco 1751 Router Software Configuration GuideOL-1070-01ExampleThe following example selects guaranteed-delay as the specified level below which an

viCisco 1751 Router Software Configuration GuideOL-1070-01For calls coming in from a POTS interface, the answer-address command is not used to select

viiCisco 1751 Router Software Configuration GuideOL-1070-01Syntax DescriptionDefaultg729r8.Command ModeDial-peer configuration.Usage GuidelinesUse th

viiiCisco 1751 Router Software Configuration GuideOL-1070-01ExampleThe following example configures a voice coder rate that provides toll quality and

ixCisco 1751 Router Software Configuration GuideOL-1070-01connection {plar | trunk } stringno connection {plar | trunk } stringSyntax DescriptionDefa

viiCisco 1751 Router Software Configuration GuideOL-1070-01Contentsimpedance 4-20input gain 4-21ip precedence 4-22ip udp checksum 4-22music-threshold

xCisco 1751 Router Software Configuration GuideOL-1070-01cptoneTo configure a voice call progress tone locale, use the cptone voice-port configuratio

xiCisco 1751 Router Software Configuration GuideOL-1070-01Usage GuidelinesUse the cptone command to specify a regional analog voice interface-related

xiiCisco 1751 Router Software Configuration GuideOL-1070-01destination-patternTo specify either the prefix or the full E.164 telephone number (depend

xiiiCisco 1751 Router Software Configuration GuideOL-1070-01dial-control-mibTo specify attributes for the call history table, use the dial-control-mi

xivCisco 1751 Router Software Configuration GuideOL-1070-01Syntax DescriptionDefaultNo dial peer configuration mode is preconfigured.Command ModeGlob

xvCisco 1751 Router Software Configuration GuideOL-1070-01Syntax DescriptionDefaultdtmf.Command ModeVoice-port configuration.Usage GuidelinesUse the

xviCisco 1751 Router Software Configuration GuideOL-1070-01Usage GuidelinesUse the echo-cancel coverage command to adjust the coverage size of the ec

xviiCisco 1751 Router Software Configuration GuideOL-1070-01Usage GuidelinesThe echo-cancel command enables cancellation of voice that is sent out of

xviiiCisco 1751 Router Software Configuration GuideOL-1070-01Usage GuidelinesVoIP monitors the quality of voice received over the network. Use the ex

xixCisco 1751 Router Software Configuration GuideOL-1070-01The values for this command apply only to the fax transmission speed and do not affect the

ContentsviiiCisco 1751 Router Software Configuration GuideOL-1070-01shutdown (voice-port configuration) 4-56signal 4-56snmp enable peer-trap poor-qov

xxCisco 1751 Router Software Configuration GuideOL-1070-01ExampleThe following example disables the icpif command:dial-peer voice 10 voipicpif 0imped

xxiCisco 1751 Router Software Configuration GuideOL-1070-01ExampleThe following example configures an FXO voice port for a terminating impedance of 6

xxiiCisco 1751 Router Software Configuration GuideOL-1070-01ip precedenceTo set IP precedence (priority) for packets sent by the dial peer, use the i

xxiiiCisco 1751 Router Software Configuration GuideOL-1070-01DefaultDisabled.Command ModeDial-peer configuration.Usage GuidelinesUse the ip udp check

xxivCisco 1751 Router Software Configuration GuideOL-1070-01If the value for this command is set too high, VAD interprets music-on-hold as silence, a

xxvCisco 1751 Router Software Configuration GuideOL-1070-01num-expTo define how to expand an extension number into a particular destination pattern,

xxviCisco 1751 Router Software Configuration GuideOL-1070-01operation {2-wire | 4-wire}no operation {2-wire | 4-wire} Syntax DescriptionDefault2-wire

xxviiCisco 1751 Router Software Configuration GuideOL-1070-01Syntax DescriptionDefault0 dB.Command ModeVoice-port configuration.Usage GuidelinesA sys

xxviiiCisco 1751 Router Software Configuration GuideOL-1070-01Syntax DescriptionDefaultNo port is preconfigured.Command ModeDial-peer configuration.U

xxixCisco 1751 Router Software Configuration GuideOL-1070-01Command ModeDial-peer configuration.Usage GuidelinesUse the prefix command to specify a p

ixCisco 1751 Router Software Configuration GuideOL-1070-01Contentsdebug vtsp stats 5-19debug vtsp tone 5-20debug vtsp vofr subframe 5-20CHAPTER 6 Rou

xxxCisco 1751 Router Software Configuration GuideOL-1070-01Command ModeDial-peer configuration.Usage GuidelinesUse the req-qos command to request a s

xxxiCisco 1751 Router Software Configuration GuideOL-1070-01ExampleThe following example configures the ring frequency for 50 Hz:voice port 0/0ring f

xxxiiCisco 1751 Router Software Configuration GuideOL-1070-01Related Commandsring frequencysession protocolTo establish a session protocol for calls

xxxiiiCisco 1751 Router Software Configuration GuideOL-1070-01Syntax DescriptionDefaultEnabled with no IP address or domain name defined.Command Mode

xxxivCisco 1751 Router Software Configuration GuideOL-1070-01The following example configures a session target using dns and the optional $u$. wildca

xxxvCisco 1751 Router Software Configuration GuideOL-1070-01Figure 1 Call Legs ExampleThese two call legs are associated by the connection ID. The co

xxxviCisco 1751 Router Software Configuration GuideOL-1070-01ConnectTime Time at which the call was connected.Dial-Peer Tag of the dial peer transmit

xxxviiCisco 1751 Router Software Configuration GuideOL-1070-01Related Commandsshow call history voiceshow dial-peer voiceshow num-expshow voice ports

xxxviiiCisco 1751 Router Software Configuration GuideOL-1070-01Usage GuidelinesUse the show call history voice privileged EXEC command to display the

xxxixCisco 1751 Router Software Configuration GuideOL-1070-01GapFillWithPrediction Duration of voice signal played out with signal synthesized from p