[cisco-voip] Call Fwd to PSTN give callers fast busy, but only occurs after 4th or 6th attempt in a row

Gregory Wenzel gwenzit at gmail.com
Wed Sep 1 07:26:18 EDT 2010


The reason code I get in Debug isdn q931 is "unallocated resources" funny
how it works 6 times in a row then i get this reason code. I thought, dsp's
but the site has pvdm3-64 and I was on site, there were no conferences going
on, there were 2 people in the office.
I will attach the config, and call flow and what I have checked.

besides debug isdn q931, debug isdn q921, debug voip ccapi inout and debug
h225 asn1 errors what other debugs do you guys reccommend?

*This problem happens locally as well, I could be in the next cubical and
call the user and after a few tries it gives me a busy signal*

I have been up and down gateway configs and call manager configs and I cant
seem to find the culprit.

I have three sites all have 1 pri, and 4port FXO. All connect over mpls, Two
of these sites work without a problem, you could forward calls all day long
to any number.
I allow 25 g729 calls over the wan and match, Locations allows 1200Kbps with
some headroom for the calls to Unity Connection at G711. This all works.
All calls over wan is G729, all calls to CUC7.1(5) are g711.

*Call flow from remote site*

Caller dials 5551212----hits pri in site A, number routes 1212 to---- AA on
unity connection in HQ site, caller then dials any extension in site B, call
forwards over ---mpls ---out to site B and rings into users 4 digit
extension then routes to--- local pri to users cell or home phone.

*Call flow locally at same site*

caller dials 4 digit ext locally in the same office to another extension
thats forwarded and eventually I get the same problem and same error msg on
the debug isdn q931

CUC has its own region and DP and location all runs at G711


I have my MTP, Transcoders all registered to CUCM, my MRGL is configured for
the sites resources then CUCM as its secondary resource

Here is my gateway config with unnecessary configlets removed.

card type t1 0 0
card type t1 0 1
!
no network-clock-participate wic 0
network-clock-participate wic 1
!
no ipv6 cef
ip source-route
ip cef
!
!
ip dhcp excluded-address 10.10.14.1 10.10.14.50
ip dhcp excluded-address 10.10.14.100 10.10.14.254
!
ip dhcp pool Voice_Pool
   network 10.10.14.0 255.255.255.0
   default-router 10.10.14.1
   option 150 ip 172.16.16.15 10.16.16.16
   lease infinite
!
!
no ip domain lookup
multilink bundle-name authenticated
!
!
!
!
isdn switch-type primary-ni
!
!
trunk group PRI
!
voice-card 0
 dspfarm
 dsp services dspfarm
!
!
!
voice service voip
 allow-connections h323 to h323
 allow-connections h323 to sip
 allow-connections sip to h323
 allow-connections sip to sip
 no supplementary-service h450.2
 no supplementary-service h450.3
 supplementary-service h450.12
 no supplementary-service sip moved-temporarily
 no supplementary-service sip refer
 h323
 sip
  registrar server expires max 3600 min 3600
  no update-callerid
!
voice class codec 1
 codec preference 1 g729r8
 codec preference 2 g711ulaw
 codec preference 3 g729br8
!
controller T1 0/0/0
 cablelength long 0db
 channel-group 0 timeslots 1-24
!
controller T1 0/0/1
 cablelength long 0db
 channel-group 0 timeslots 1-24
!
controller T1 0/1/0
 cablelength long 0db
 pri-group timeslots 1-24
!
ip tftp source-interface GigabitEthernet0/1.100
!
class-map match-all Voice
 match ip dscp ef
class-map match-any Signaling
 match ip dscp af31
 match ip dscp cs3
!
!
policy-map MLNJ
 class Signaling
    bandwidth 156
 class Voice
  set ip dscp ef
    priority percent 25
 class class-default
    fair-queue
     random-detect
!
interface Multilink1
 description Verizon MPLS
 ip address 152.181.123.101 255.255.255.252
 ip flow ingress
 ip flow egress
 no peer neighbor-route
 ppp chap hostname w0x14753-1933101
 ppp multilink
 ppp multilink links minimum 1
 ppp multilink group 1
 ppp multilink fragment disable
 service-policy output MLNJ
!
interface GigabitEthernet0/0
 no ip address
 ip flow ingress
 ip flow egress
 duplex auto
 speed auto
!
interface GigabitEthernet0/0.1
 encapsulation dot1Q 1 native
 ip address 192.168.14.1 255.255.255.0
 ip helper-address 192.168.14.20
!
interface GigabitEthernet0/0.100
 encapsulation dot1Q 100
 ip address 10.10.14.1 255.255.255.0
 h323-gateway voip interface
 h323-gateway voip bind srcaddr 10.10.14.1
!
interface GigabitEthernet0/1
 no ip address
 shutdown
 duplex auto
 speed auto
!
interface GigabitEthernet0/2
 no ip address
 shutdown
 duplex auto
 speed auto
!
interface Serial0/0/0:0
 no ip address
 encapsulation ppp
 ppp chap hostname w0x13253-1933630
 ppp multilink
 ppp multilink group 1
!
interface Serial0/0/1:0
 no ip address
 encapsulation ppp
 ppp chap hostname w0x13253-1933630
 ppp multilink
 ppp multilink group 1
!
interface Serial0/1/0:23
 no ip address
 encapsulation hdlc
 isdn switch-type primary-ni
 isdn incoming-voice voice
 no cdp enable
!
!
router bgp 1
 no synchronization
 bgp log-neighbor-changes
 network 10.10.14.0 mask 255.255.255.0
 network 192.168.14.0
 neighbor 152.181.123.100 remote-as 65000
 neighbor 152.181.123.100 soft-reconfiguration inbound
 no auto-summary
!
voice-port 0/1/0:23
!
voice-port 0/2/0
!
voice-port 0/2/1
!
voice-port 0/2/2
!
voice-port 0/2/3
!
ccm-manager fallback-mgcp
ccm-manager redundant-host 172.16.16.16
ccm-manager mgcp
no ccm-manager fax protocol cisco
ccm-manager music-on-hold
ccm-manager config server 172.16.16.15
ccm-manager config
!
mgcp
mgcp call-agent 172.16.16.15 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
mgcp package-capability pre-package
no mgcp package-capability res-package
no mgcp package-capability fxr-package
no mgcp timer receive-rtcp
mgcp sdp simple
mgcp fax t38 inhibit
no mgcp explicit hookstate
mgcp rtp payload-type g726r16 static
mgcp bind control source-interface GigabitEthernet0/0.100
mgcp bind media source-interface GigabitEthernet0/0.100
!
mgcp profile default
!
sccp local GigabitEthernet0/0.100
sccp ccm 172.16.16.15 identifier 1 version 7.0
sccp ccm 172.16.16.16 identifier 2 version 7.0
sccp
!
sccp ccm group 1
 description ***Conference:4 Local Xcode:3 CUCMXcode:2***
 bind interface GigabitEthernet0/0.100
 associate ccm 1 priority 1
 associate ccm 2 priority 2
 associate profile 3 register MTPD04DC560
 associate profile 1 register MLNJ01CONF
 associate profile 2 register MLNJ01CODE
 keepalive retries 5
 switchover method immediate
 switchback method immediate
!
dspfarm profile 2 transcode
 codec g711ulaw
 codec g711alaw
 codec g729ar8
 codec g729abr8
 maximum sessions 5
 associate application SCCP
!
dspfarm profile 1 conference
 codec g711ulaw
 codec g711alaw
 codec g729ar8
 codec g729abr8
 codec g729r8
 codec g729br8
 maximum sessions 1
 associate application SCCP
!
dspfarm profile 3 mtp
 codec g711ulaw
 maximum sessions software 25
 associate application SCCP
!
dial-peer voice 555 voip
 description ***HQ VM***
 destination-pattern 2222
 session protocol sipv2
 session target ipv4:172.16.16.15
 dtmf-relay sip-notify
 codec g711ulaw
 no vad
!
dial-peer voice 5556 voip
 description ***HQ VM***
 destination-pattern 2222
 session protocol sipv2
 session target ipv4:172.16.16.16
 dtmf-relay sip-notify
 codec g711ulaw
 no vad
!
dial-peer voice 100 pots
 destination-pattern 91900.......
!
dial-peer voice 999010 pots
 service mgcpapp
!
dial-peer voice 5 pots
 incoming called-number .
 direct-inward-dial
 port 0/1/0:23
!
dial-peer voice 10 pots
 destination-pattern 9[2-9]11$
 port 0/1/0:23
 forward-digits 3
!
dial-peer voice 15 pots
 destination-pattern 911$
 port 0/1/0:23
 prefix 911
!
dial-peer voice 20 pots
 destination-pattern 91[2-9]..[2-9]......
 port 0/1/0:23
 forward-digits 11
!
dial-peer voice 900 pots
 destination-pattern 91900.......
!
dial-peer voice 300 voip
 description ** Inbound DID's Peer to PUB**
 destination-pattern 856505....$
 session target ipv4:172.16.16.15
 dtmf-relay h245-alphanumeric
 no vad
!
dial-peer voice 305 voip
 description **Inbound DID's Peer to SUB**
 preference 2
 destination-pattern 856505....$
 session target ipv4:172.16.16.16
 dtmf-relay h245-alphanumeric
 no vad
!
dial-peer voice 310 voip
 description **Outbound**
 destination-pattern 91[2-9]..[2-9]......
 session target ipv4:172.16.16.15
 incoming called-number .
 dtmf-relay h245-alphanumeric
 no vad
!
dial-peer voice 320 voip
 description **Outbound**
 destination-pattern 9[2-9]11
 session target ipv4:172.16.16.15
 incoming called-number .
 dtmf-relay h245-alphanumeric
 no vad
!
dial-peer voice 325 voip
 description **Outbound**
 preference 2
 destination-pattern 9[2-9]11
 session target ipv4:172.16.16.16
 incoming called-number .
 dtmf-relay h245-alphanumeric
 no vad
!
dial-peer voice 315 voip
 description **Outbound**
 preference 2
 destination-pattern 91[2-9]..[2-9]......
 session target ipv4:172.16.16.16
 incoming called-number .
 dtmf-relay h245-alphanumeric
 no vad


Thanks in advance

Greg W
ConRes
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