Lab 13 - DTMF Relay

7/23/2019 Lab 13 - DTMF Relay

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Lab 13 - DTMF Relay

CCNA Voice Lab 13

DTMF Relay

Lab Objective:

The objective of this lab exercise is for you to learn and understand how to implement DTMF relayfunctionality in Cisco IOS voice ateways

Topic Description:

DTMF! or Dual Tone Multi Fre"uency! refers to the tones that a re played when the dial pad on a phone ispressed# DTMF is often referred to as touch$tones# %ecause voice traffic is typically compressed! DTMF canbecome distorted# The DTMF relay feature allows the DTMF to be sent out$of$band! which reso lves thedistortion problem

Lab Difficulty:

This lab has a difficulty ratin of &'()

Reainess !ssess"ent:

*hen ready for your exam! you should be able to complete this lab in no more than (& minutes

Lab Topolo#y:

+lease use the followin topoloy to complete this lab exercise,

Lab $% &onfi#uration Tasks

Task $:

Confiure the hostnames and I+ addresses on -. and -/ as illustrated in the diaram# Confiure -/ toprovide cloc0in to -.# Confiure the cloc0 rate on -/ as 1))2bps

Task ':

Confiure +OTS dial peers for the connected phones on -. and -/ as illustrated in the diaram# 3se anydial peer numbers you want

Task %:



Confiure 4oI+ dial peers on -. and -/ for the extensions at either location# 3se any dial peer numbersyou want

Task (:

I4- applications are bein used at both sites5 however! there are a lot of issues bein experiencedbecause DTMF tones are be in sent in$band usin the default DTMF relay method# To address andresolve this issue! confiure DMTF relay on -. and -/ such that tones are sent out$of$band usin 6#./&sinalin and the lenth of the tone is passed alon

Task ):

4erify your confiuration usin the appropriate show and ebu# commands

Lab $% &onfi#uration an *erification

Task $:

-.7confi89hostna"e R'-.7confi89interface +erial,/,-.7confi$if89escription .&onnecte To R( +erial ,/$.-.7confi$if89ip aress $),.$.$.' ')).')).')).,

-/7confi89hostna"e R(

-/7confi89interface +erial,/$-/7confi$if89escription .&onnecte To R' +erial ,/,-/7confi$if89ip aress $),.$.$.( ')).')).')).,-/7confi$if89clock rate -,,,,,

4erify connectivity by performin a simple p in between the two routers

-.9pin# $),.$.$.(

Type escape se"uence to abort#Sendin &! ())$byte ICM+ :chos to (&)#(#(#/! timeout is . seconds,;;;;;Success rate is ()) percent 7&'&8! round$trip min'av'max < /'/'/ ms

-/9pin# $),.$.$.'

Type escape se"uence to abort#Sendin &! ())$byte ICM+ :chos to (&)#(#(#.! timeout is . seconds,;;;;;Success rate is ()) percent 7&'&8! round$trip min'av'max < /'/'1 ms

Task ':

-.7confi89ialpeer voice $ pots-.7confi$dial$peer89estinationpattern $$$$-.7confi$dial$peer89port %/,/,-.7confi$dial$peer89eit-.7confi89ialpeer voice ' pots-.7confi$dial$peer89estinationpattern $$$'-.7confi$dial$peer89port %/,/$-.7confi$dial$peer89eit

-/7confi89ialpeer voice $ pots-/7confi$dial$peer89estinationpattern '''$-/7confi$dial$peer89port %/,/,-/7confi$dial$peer89eit-/7confi89ialpeer voice ' pots-/7confi$dial$peer89estinationpattern ''''-/7confi$dial$peer89port %/,/$-/7confi$dial$peer89eit



Task %:

-.7confi89ialpeer voice % voip-.7confi$dial$peer89estinationpattern '''.-.7confi$dial$peer89session tar#et ipv(:$),.$.$.(-.7confi$dial$peer89eit

-/7confi89ialpeer voice % voip-/7confi$dial$peer89estinationpattern $$$.-/7confi$dial$peer89session tar#et ipv(:$),.$.$.'

-/7confi$dial$peer89eit

Task (:

-.7confi89ialpeer voice %-.7confi$dial$peer89t"frelay h'()alphanu"eric-.7confi$dial$peer89eit

-/7confi89ialpeer voice %-/7confi$dial$peer89t"frelay h'()alphanu"eric-/7confi$dial$peer89eit

Task ):

First! verify that the confiuration is correct usin the show ialpeer voice command,

-.9show ialpeer voice % 0 i *oice0Type0type0DTMF0t"f 4oiceOverIp+eer= peer type < voice! information type < voice! numberin Type < >un0nown? DTMF Relay 1 enable2 type < voip! sess ion$taret < >ipv/,(&)#(#(#/?! t"frelay 1 h'()alphanu"eric2 -T+ dynamic payload type values, @T: < ()( Cisco, @S:<())! fax<AB! fax$ac0<A! dtmf<(.(! fax$relay<(.. -T+ comfort noise payload type < (A Max -edirects < (! sina lin$type < cas!

-/9show ialpeer voice % 0 i *oice0Type0type0DTMF0t"f 4oiceOverIp+eer= peer type < voice! information type < voice! numberin Type < >un0nown? DTMF Relay 1 enable2 type < voip! sess ion$taret < >ipv/,(&)#(#(#.?! t"frelay 1 h'()alphanu"eric2 -T+ dynamic payload type values, @T: < ()( Cisco, @S:<())! fax<AB! fax$ac0<A! dtmf<(.(! fax$relay<(.. -T+ comfort noise payload type < (A Max -edirects < (! sina lin$type < cas!

@ext! place a call between any number on -. and -/ and use the show call active voice command andthe options to ensure that 6#./& alphanumeric is the DTM relay method,

-.9show call active voice co"pact callIDE 'O FG TsecE Codec type +eer ddress I+ -ipE,udpETotal call$les, . & @S T=)( .Ar1 T:H: +(((( B O- T=)( .Ar1 4OI+ +.... (&)#(#(#/,(/1B-.9-.9show call active voice 0 i Dt"f txJDtmf-elay<h./&$alphanumeric

Final Relevant &onfi#uration R':

-.9show runnin#confi#%uildin confiuration###



Current confiuration , (&BA bytes;version (.#/service timestamps debu datetime msecservice timestamps lo datetime msecno service password$encryption;hostname -.;;

;;interface Serial)') description #Connected To -/ Serial )'(# ip address (&)#(#(#. .&&#.&&#.&&#) no fair$"ueue;;;;voice$port =')');voice$port =')'(;

voice$port ='(');voice$port ='('(;;mcp behavior .A$variants static$pt;;;;dial$peer voice ( pots destination$pattern (((( port =')');dial$peer voice . pots destination$pattern (((. port =')'(;dial$peer voice = voip destination$pattern ...# sess ion taret ipv/,(&)#(#(#/ dtmf$relay h./&$alphanumeric

Final Relevant &onfi#uration R(:

-/9show runnin#confi#%uildin confiuration###

Current confiuration , (B(. bytes;version (.#/service timestamps debu datetime msecservice timestamps lo datetime msecno service password$encryption;hostname -/;;;;interface Serial)'(



#ip address (&)#(#(#/ .&&#.&&#.&&#) cloc0 rate 1)))));;;;voice$port =')');voice$port =')'(;

voice$port ='(');voice$port ='('(;;;;dial$peer voice ( pots destination$pattern ...( port =')');dial$peer voice . pots destination$pattern .... port =')'(

;dial$peer voice = voip destination$pattern (((# sess ion taret ipv/,(&)#(#(#. dtmf$relay h./&$alphanumeric

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Lab 13 - DTMF Relay