[cisco-voip] Re: MGCP Fallback

Fri Nov 25 01:40:42 EST 2005

Hi Carlos,
                I used the following configuration guides available from
Cisco Online, with no problems.   Just remember that this guides are for
IOS12.2.(11)T onwards and that the command "call appplication alternate
default" has changed to the following on IOS 12.3.14T onwards

application
 ==>global
         ==> service alternate dafault

Guides
======

1-) Configuring SRS Telephony and MGCP Gateway Fallback (
http://www.cisco.com/warp/public/788/AVVID/configsrst_mgcpfallback.html)

2-) MGCP Gateway Fallback Transition to Default H.323 Session Application (
http://www.cisco.com/en/US/tech/tk1077/technologies_configuration_example09186a008012ecc6.shtml
)

I also had to use an Outbound Translation Rule because in our environment
users dial a "0" to obtain an outside line.  More information about
translation rules can be found at,

You can find out more information about "Number Translation using Voice
Translation Profiles" from

http://www.cisco.com/en/US/tech/tk652/tk90/technologies_configuration_example09186a00803f818a.shtml

http://www.cisco.com/en/US/products/sw/voicesw/ps2169/products_command_reference_book09186a008054e8b9.html

Nevertheless, I have also inlcuded a working config for you.

Hope it helps,

Sergio Aguilera

version 12.3
service config
no service pad
service timestamps debug datetime msec show-timezone
service timestamps log datetime msec show-timezone
service password-encryption
service compress-config
!
!
boot-start-marker
boot system flash c3725-ipvoice-mz.123-11.T6.bin
boot-end-marker
!
no logging console
enable password 7 12170000160E0910332A
!
username support password 7 1107160B44061C031621
network-clock-participate slot 2
network-clock-select 1 E1 2/0
voice-card 2
 dspfarm
!
ip subnet-zero
ip cef
!
!
!
!
isdn switch-type primary-net5
isdn voice-call-failure 0
!
!
voice rtp send-recv
!
voice service pots
!
voice service voip
!
!
voice class codec 100
 codec preference 1 g711ulaw
 codec preference 2 g729r8 bytes 30
!
!
!
voice class h323 10
 h225 timeout tcp establish 3
!
!
!
!
!
!
voice translation-rule 1
 rule 1 /^0/ //
!
!
voice translation-profile SRST_Outbound
 translate called 1
!
!
ccm-manager fallback-mgcp
ccm-manager redundant-host 10.35.255.230
ccm-manager mgcp
ccm-manager music-on-hold
!
!
controller E1 2/0
 pri-group timeslots 1-20 service mgcp
!
!
!
interface FastEthernet0/0
 ip address 10.17.200.220 255.255.255.0
 duplex auto
 speed auto
 standby 1 ip 10.17.200.225
 standby 1 timers 3 7
 standby 1 preempt
!
!
interface FastEthernet0/1
 ip address 10.34.255.220 255.255.248.0
 duplex auto
 speed auto
!
interface Serial0/1
 no ip address
 shutdown
 clockrate 2000000
!
interface Serial2/0:15
 no ip address
 isdn switch-type primary-net5
 isdn incoming-voice voice
 isdn bind-l3 ccm-manager
 no cdp enable
!
ip classless
ip route 0.0.0.0 0.0.0.0 10.17.200.254
!
ip http server
!

!
control-plane
!
!
call application alternate default
!
!
voice-port 2/0:15
 cptone AU
!
mgcp
mgcp call-agent 10.34.255.230 2427 service-type mgcp version 0.1
mgcp dtmf-relay voip codec all mode out-of-band
mgcp rtp unreachable timeout 1000 action notify
mgcp modem passthrough voip mode nse
mgcp package-capability rtp-package
mgcp package-capability sst-package
no mgcp package-capability fxr-package
mgcp package-capability pre-package
no mgcp timer receive-rtcp
mgcp sdp simple
mgcp fax t38 inhibit
mgcp rtp payload-type g726r16 static
!
mgcp profile default
!
!
!
dial-peer voice 68000 pots
 description Used in SRST mode for Inbound and Outbound PSTN Calls
 translation-profile outgoing SRST_Outbound
 preference 1
 destination-pattern 0T
 incoming called-number .
 clid restrict
 clid restrict
 direct-inward-dial
 port 2/0:15
 forward-digits all
!
!
call-manager-fallback
 max-conferences 8
 limit-dn 7940 1
 limit-dn 7960 5
 timeouts interdigit 2
 ip source-address 10.17.200.225 port 2000
 max-ephones 120
 max-dn 500
 keepalive 20
 voicemail 061218111
 call-forward busy 061218111
 call-forward noan 061218111 timeout 10
 time-zone 48
 time-format 24
 date-format dd-mm-yy
!
!
line con 0
 password 7 111F160C07060E1F10
line aux 0
line vty 0 4
 password 7 050F030A35424B1D
line vty 5 15
 password 7 050F030A35424B1D
!
ntp clock-period 17180782
ntp server 10.0.9.1 prefer
!
end

Message: 1
Date: Thu, 24 Nov 2005 11:10:28 -0500
From: "Ortiz, Carlos" <CORTIZ at broward.org>
Subject: [cisco-voip] MGCP Fallback
To: <cisco-voip at puck.nether.net>
Message-ID:
       <26B357EF9FB7D04A989C9E82A9E5436E01BC2AD4 at MREXVS01.bc.broward.cty>
Content-Type: text/plain; charset="us-ascii"

Can someone post a known working config for MGCP Fallback to H.323 SRST
using analog FXO ports and/or PRI.  I am having a little trouble getting
the outbound inbound calls working once the phones failover.  In
particular I need to see specific commands on Pots dial peers and what
actually needs to be there.

Not sure if I need incoming called number under each dial peer or a
separate dial peer to catch the incoming call leg, etc.  Any help would
be appreciated.

Thanks,

Carlos
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