01-26-2014 10:10 PM - edited 03-16-2019 09:26 PM
Hi All ,
I have Problem with E1 in Cisco Call Manager , when outgoing call using E1 in phone ,status is always busy
here is the debug q931
Jan 27 06:04:13.459: ISDN Se0/3/0:15 Q931: TX -> SETUP pd = 8 callref = 0x008B
Bearer Capability i = 0x8090A3
Standard = CCITT
Transfer Capability = Speech
Transfer Mode = Circuit
Transfer Rate = 64 kbit/s
Channel ID i = 0xA9839F
Exclusive, Channel 31
Called Party Number i = 0x80, '081381XXXXX'
Plan:Unknown, Type:Unknown
*Jan 27 06:04:13.495: ISDN Se0/3/0:15 Q931: RX <- RELEASE_COMP pd = 8 callref = 0x808B
Cause i = 0x82AC - Requested circuit/channel not available
and when I check debug q921 here is what i got :
*Jan 27 06:02:30.311: ISDN Se0/3/0:15 Q921: User RX <- SABMEp sapi=0 tei=13
*Jan 27 06:02:31.311: ISDN Se0/3/0:15 Q921: User RX <- SABMEp sapi=0 tei=13
*Jan 27 06:02:32.311: ISDN Se0/3/0:15 Q921: User RX <- SABMEp sapi=0 tei=13
*Jan 27 06:02:33.311: ISDN Se0/3/0:15 Q921: User RX <- SABMEp sapi=0 tei=13
*Jan 27 06:02:34.271: ISDN Se0/3/0:15 Q921: User RX <- RRp sapi=0 tei=0 nr=13
*Jan 27 06:02:34.271: ISDN Se0/3/0:15 Q921: User TX -> RRf sapi=0 tei=0 nr=15
*Jan 27 06:02:34.311: ISDN Se0/3/0:15 Q921: User RX <- SABMEp sapi=0 tei=13
*Jan 27 06:02:35.311: ISDN Se0/3/0:15 Q921: User RX <- SABMEp sapi=0 tei=13
*Jan 27 06:02:37.311: ISDN Se0/3/0:15 Q921: User RX <- SABMEp sapi=0 tei=13
*Jan 27 06:02:38.311: ISDN Se0/3/0:15 Q921: User RX <- SABMEp sapi=0 tei=13
*Jan 27 06:02:39.311: ISDN Se0/3/0:15 Q921: User RX <- SABMEp sapi=0 tei=13
*Jan 27 06:02:40.311: ISDN Se0/3/0:15 Q921: User RX <- SABMEp sapi=0 tei=13
*Jan 27 06:02:41.311: ISDN Se0/3/0:15 Q921: User RX <- SABMEp sapi=0 tei=13
*Jan 27 06:02:42.311: ISDN Se0/3/0:15 Q921: User RX <- SABMEp sapi=0 tei=13
*Jan 27 06:02:43.311: ISDN Se0/3/0:15 Q921: User RX <- SABMEp sapi=0 tei=13
*Jan 27 06:02:44.271: ISDN Se0/3/0:15 Q921: User TX -> RRp sapi=0 tei=0 nr=15
*Jan 27 06:02:44.283: ISDN Se0/3/0:15 Q921: User RX <- RRp sapi=0 tei=0 nr=13
*Jan 27 06:02:44.283: ISDN Se0/3/0:15 Q921: User TX -> RRf sapi=0 tei=0 nr=15
*Jan 27 06:02:44.287: ISDN Se0/3/0:15 Q921: User RX <- RRf sapi=0 tei=0 nr=13
*Jan 27 06:02:44.311: ISDN Se0/3/0:15 Q921: User RX <- SABMEp sapi=0 tei=13
*Jan 27 06:02:45.311: ISDN Se0/3/0:15 Q921: User RX <- SABMEp sapi=0 tei=13
*Jan 27 06:02:46.311: ISDN Se0/3/0:15 Q921: User RX <- SABMEp sapi=0 tei=13
*Jan 27 06:02:47.311: ISDN Se0/3/0:15 Q921: User RX <- SABMEp sapi=0 tei=13
*Jan 27 06:02:48.311: ISDN Se0/3/0:15 Q921: User RX <- SABMEp sapi=0 tei=13
I wonder where is the problem , while my e1 status
ISDN Serial0/3/0:15 interface
dsl 1, interface ISDN Switchtype = primary-net5
Layer 1 Status:
ACTIVE
Layer 2 Status:
TEI = 0, Ces = 1, SAPI = 0, State = MULTIPLE_FRAME_ESTABLISHED
Layer 3 Status:
0 Active Layer 3 Call(s)
Active dsl 1 CCBs = 0
The Free Channel Mask: 0xFFFF7FFF
Number of L2 Discards = 0, L2 Session ID = 10
Total Allocated ISDN CCBs = 0
and E1 is up
anyone kindly help ?
Solved! Go to Solution.
01-27-2014 02:55 AM
Hi Tommy.
On CUCM, try to change b-channel selection to bottom-up
HTH
Regards
Carlo
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"The more you help the more you learn"
01-27-2014 03:51 AM
Also you can adding one command since this h.323 GW
interface serial XX
isdn nego b-chan
isdn b-chan ascending
Br,
Nadeem
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01-27-2014 03:54 AM
Hi Nadeem.
From posted config I see
pri-group timeslots 1-31 service mgcp
So it seems to be MGCP controlled not H323.
Regards
Carlo
Please rate all helpful posts
"The more you help the more you learn"
01-27-2014 04:00 AM
that's my bad, i thought it was h.323.
Br,
Nadeem
Please rate all useful post.
01-27-2014 08:20 PM
HI Carlo ,
In the CUCM E1 Gateway i have already config channel to bottom-up or top-down but no result ,
but when outgoing E1 never change channel other than 1 when setting top-down , and never change channel other than 31 when i set bottom-up
i have used command
isdn service b_channel 1 state 2
to force it use another channel , but the outgoing call can not procceed , and in debug isdn q931 not showing anything.
when i change isdn service b_channel 1 state 0 , debug isdn q931 out but showing no requested channel.
best regards,
Tommy
01-27-2014 08:15 PM
Hi Nadeem,
I Already enable the network select
Network Clock Configuration
---------------------------
Priority Clock Source Clock State Clock Type
1 E1 0/3/0 GOOD E1
10 Backplane GOOD PLL
Current Primary Clock Source
---------------------------
Priority Clock Source Clock State Clock Type
1 E1 0/3/0 GOOD E1
but still outgoing status requested circuit/channel not available
regards,
Tommy
01-27-2014 02:50 AM
Hi,
You get a RX "Requested circuit/channel not available" after a TX from your side.
I would contact the provider.
If the E1 is MGCP controlled you might try to enable "Inhibit restarts at PRI initialization" (unselect it)
After a reset the CM will request each channel, and the provider should aknowledge this.
I the cases I had this error, it was always a provider issue.
Bye,
Jan
01-27-2014 11:50 PM
Hi Tommy,
Is SLIPs and errors problem resolved?
can u run the command show isdn service on router to check the channel status?
regds,
aman
01-28-2014 11:04 PM
Hi aman ,
nope the slip error still same , i have replaced the E1 port to another E1 but the result still same .
show isdn service
PRI Channel Statistics:
%Q.931 is backhauled to CCM MANAGER 0x0003 on DSL 1. Layer 3 output may not apply
ISDN Se0/3/0:15, Channel [1-31]
Configured Isdn Interface (dsl) 1
Channel State (0=Idle 1=Proposed 2=Busy 3=Reserved 4=Restart 5=Maint_Pend)
Channel : 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1
State : 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 3 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0
Service State (0=Inservice 1=Maint 2=Outofservice 8=MaintPend 9=OOSPend)
Channel : 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1
State : 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 2 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0
regards,
Tommy
01-28-2014 11:09 PM
Hi Jay,
I have contact the provider , and provider have confirm they have opened the channel from their side.
I have tried "Inhibit restarts at PRI initialization" but the result is still same .
Regards,
Tommy
01-28-2014 11:52 PM
Hi,
Believe me it's a provider issue.
Provider sends a RX, 'channel not available'. Provider has to tell you why they send this message. There must be a reason for it. And again, THEY send this message! Not you!
Several years ago I had a similar issue, and customer wanted to throw out Cisco, because provider says they are not blocking channels etc, finally customer wanted to sue provider, and then provider changed some equipment and all was solved.
And 1 year ago, with another customer, same issue. Provider says, they don't block channels, I told my customer, that it is a problem with the provider, and I can do nothing, and it's up to customer and provider.
After a week or so engineer from provider comes on site, does something and viola, it works! (a year without issues now)
Good luck!
Bye,
Jan
01-29-2014 12:47 AM
Hi Tommy,
As suggested by Jan , can't you ask Telco to check the E1 link through BERT?
regds,
aman
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