SRST fail

Answered Question
Feb 3rd, 2009
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Hello,


I need some help in SRST. I have Callmanager Ver.5.12 and the remote office has Cisco ISR2851 running IOS spservicesk9-mz.124-9.T7. In the event of SRST, inbound and outbound call to the remote site fail. Debug q931 shows


*Feb 2 21:43:52.711: ISDN Se0/3/0:23 Q931: RX <- SETUP pd = 8 callref = 0x1D94

Bearer Capability i = 0x8090A2

Standard = CCITT

Transfer Capability = Speech

Transfer Mode = Circuit

Transfer Rate = 64 kbit/s

Channel ID i = 0xA98381

Exclusive, Channel 1

Calling Party Number i = 0x2181, '9173267515'

Plan:ISDN, Type:National

Called Party Number i = 0xC1, '3771'

Plan:ISDN, Type:Subscriber(local)

*Feb 2 21:43:52.723: ISDN Se0/3/0:23 Q931: TX -> CALL_PROC pd = 8 callref = 0x9D94

Channel ID i = 0xA98381

Exclusive, Channel 1

*Feb 2 21:43:52.727: ISDN Se0/3/0:23 Q931: TX -> DISCONNECT pd = 8 callref = 0x9D94

Cause i = 0x8081 - Unallocated/unassigned number

*Feb 2 21:43:52.807: ISDN Se0/3/0:23 Q931: RX <- RELEASE pd = 8 callref = 0x1D94

*Feb 2 21:43:52.807: ISDN Se0/3/0:23 Q931: TX -> RELEASE_COMP pd = 8 callref 4


Here is the Call-manager-fallback


call-manager-fallback

max-conferences 8 gain -6

transfer-system full-consult

ip source-address 10.107.100.4 port 2000

max-ephones 96

max-dn 192 dual-line preference 2

system message primary Network Outage

dialplan-pattern 1 416682.... extension-length 4

transfer-pattern .T

voicemail 12125919147

no huntstop

alias 1 4907 to 4907 cfw 4908 timeout 6

alias 2 4908 to 4908 cfw 4909 timeout 6

alias 3 4909 to 4909 cfw 4910 timeout 6

call-forward pattern .T

call-forward busy 12125919148

call-forward noan 12125919148 timeout 16

multicast moh 239.1.1.110 port 16400 route 10.107.100.4



Any help is appreciated.


Thanks

Mark


Correct Answer by Chris Deren about 8 years 5 months ago

That could certainly be the reason, I would suggest upgrading to 12.4.15T8.

Also, ensure your binding of SRST interface is to proper IP address:

"ip source-address 10.107.100.4 port 2000"


HTH,


Chris

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Chris Deren Tue, 02/03/2009 - 07:53
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Unallocated/unassigned number - indicates that the 3771 number cannot be found, is there a phone with that DN that registered under SRST? Are you performing any further digit manipulation?

Can you post your entire config?

What do you get in q931 debug for outboud call?


Chris

markcarat Tue, 02/03/2009 - 08:09
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There is a phone with that DN. Outbound call fail and debug q931 did not show anyting. However I notice the sh ephone does not list out the model of phone I am using, 7965.


#sh ephone ?

7902 7902 phone status

7905 7905 phone status

7910 7910 phone status

7911 7911 phone status

7912 7912 phone status

7914 7914 phone status

7920 7920 phone status

7935 7935 phone status

7936 7936 phone status

7940 7940 phone status

7941 7941 phone status

7941GE 7941GE phone status

7960 7960 phone status

7961 7961 phone status

7961GE 7961GE phone status

7970 7970 phone status

7971 7971 phone status

H.H.H mac address

anl ANL port status

ata ata phone status

attempted-registrations Attempted ephone list

bri BRI port status

cfa registered ephones with call-forward-all set

dn Dn with tag assigned

dnd registered ephones with do-not-disturb set

login phone login status

offhook Offhook phone status

overlay registered ephones with overlay DNs

phone-load Ephone phoneload information

registered Registered ephone status

remote non-local phones (with no arp entry)

ringing Ringing phone status

sockets Active ephone sockets

summary Summary of all ephone

tapiclients Ephone status of tapi client

telephone-number Telephone number assigned

unregistered Unregistered ephone status

| Output modifier


Did some search in Google and notice the router's IOS 12.4-9.t7 may not support 7965 phone. I will upgrade the IOS and let you know if that fix the problem.


Mark

Correct Answer
Chris Deren Tue, 02/03/2009 - 08:12
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That could certainly be the reason, I would suggest upgrading to 12.4.15T8.

Also, ensure your binding of SRST interface is to proper IP address:

"ip source-address 10.107.100.4 port 2000"


HTH,


Chris

markcarat Tue, 02/03/2009 - 10:03
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I upgraded the router IOS to 12.4.15T8. SRST started to work.


Thanks.


Mark

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