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ISDN BRI on Cisco 2811 ISR with NM-4B-U

Hi all,

I have CCME and NM-4B-U network module in it.

Cisco.com recommends connect a BRI U port with straight-through cabel...and I did that. NT1 led lights green. That's ok....

Layer1 and Layer2 are OK.

===========

CCME_2811(config-if)#do sh isdn st

Global ISDN Switchtype = basic-net3

ISDN BRI1/0 interface

dsl 16, interface ISDN Switchtype = basic-net3

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 16 CCBs = 0

The Free Channel Mask: 0x80000003

===========

CCME_2811(config-if)#do sh controlle bri 1/0

BRI slot 1 interface 0 with integrated NT1

Layer 1 is ACTIVATED. (ISDN L1 State F7, Internal State F7)

===========

If a call places from the telco-network, "user unavailable" message registered.....

"debug isdn q931" output:

===========

CCME_2811(config-if)#

Apr 22 18:21:08.750: ISDN BR1/0 Q931: RX <- SETUP pd = 8 callref = 0x01

Sending Complete

Bearer Capability i = 0x8090A3

Standard = CCITT

Transfer Capability = Speech

Transfer Mode = Circuit

Transfer Rate = 64 kbit/s

Channel ID i = 0x89

Exclusive, B1

Called Party Number i = 0xC1, '455510'

Plan:ISDN, Type:Subscriber(local)

High Layer Compat i = 0x9181

Apr 22 18:21:08.750: ISDN BR1/0 EVENT: process_rxstate: ces/callid 1/0x13 calltype 2 HOST_INCOMING_CALL

Apr 22 18:21:08.750: ISDN BR1/0 EVENT: host_incoming_call: call_id 0x0013, Guid = 2F65BDE0800D bchan 0

Apr 22 18:21:08.754: ISDN BR1/0 EVENT: UserIdle: callid 0x13 received ACCEPT_CALL (0x13)

Apr 22 18:21:08.754: BRI1/0:1: Enabled channel B1

Apr 22 18:21:08.754: BRI1/0: Wrote command 0x14 to SID

Apr 22 18:21:08.754: ISDN BR1/0 **ERROR**: accept_incoming_csm_call: modem problem Bearer capability not available

(0x3A): b channel 0, call id 0x13

Apr 22 18:21:08.754: BRI1/0:1: Disabled channel B1

Apr 22 18:21:08.754: BRI1/0: Wrote command 0x15 to SID

Apr 22 18:21:08.754: ISDN BR1/0 Q931: TX -> CALL_PROC pd = 8 callref = 0x81

Channel ID i = 0x89

Exclusive, B1

Apr 22 18:21:08.774: ISDN BR1/0 Q931: TX -> DISCONNECT pd = 8 callref = 0x81

Cause i = 0x80BA - Bearer capability not available

Apr 22 18:21:08.866: ISDN BR1/0 Q931: RX <- RELEASE pd = 8 callref = 0x01

Apr 22 18:21:08.866: ISDN BR1/0 EVENT: process_rxstate: ces/callid 1/0x13 calltype 2 HOST_DISCONNECT_ACK

Apr 22 18:21:08.870: ISDN BR1/0 Q931: TX -> RELEASE_COMP pd = 8 callref = 0x81

CCME_2811(config-if)#

===========

What wrong with "BEARER CAPABILITIES" and how could I fix this trouble???

Maybe any other trouble exists but I can't see it :)

1 ACCEPTED SOLUTION

Accepted Solutions
Hall of Fame Super Gold

Re: ISDN BRI on Cisco 2811 ISR with NM-4B-U

The NM-4B-U does not supports voice. You must use exclusively VIC2-2BRI-S/T.

9 REPLIES

Re: ISDN BRI on Cisco 2811 ISR with NM-4B-U

It sounds like your B channels are busied out? Can you upload your config? Also a show voice port summary?

New Member

Re: ISDN BRI on Cisco 2811 ISR with NM-4B-U

Sure I Can...In attachments....

New Member

Re: ISDN BRI on Cisco 2811 ISR with NM-4B-U

here they are...

New Member

Re: ISDN BRI on Cisco 2811 ISR with NM-4B-U

Maybe p.bevilacqua is right? It's strange, but I does't see any VOICE-PORTs for BRI in router configuration.

However I can set "isdn incoming-voice voice/data/modem" in BRI-interface configuration. What is this stand for?

Hall of Fame Super Gold

Re: ISDN BRI on Cisco 2811 ISR with NM-4B-U

The NM-4B-U does not supports voice. You must use exclusively VIC2-2BRI-S/T.

New Member

Re: ISDN BRI on Cisco 2811 ISR with NM-4B-U

Can u present any link where is wrote about that???

Does NM-4B-S/T support voice ?

New Member

Re: ISDN BRI on Cisco 2811 ISR with NM-4B-U

Can u present any link where is wrote about that???

Does NM-4B-S/T support voice ?

New Member

Re: ISDN BRI on Cisco 2811 ISR with NM-4B-U

What is the primary differences between

VIC2-2BRI-S/T and VIC2-2BRI-NT/TE ??

Hall of Fame Super Gold

Re: ISDN BRI on Cisco 2811 ISR with NM-4B-U

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