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New Member

Cisco ISDN network mode

hello

I have one cisco 2801 connected to an Alcatel PBX by one BRI.

My BRI is configured in network mode and I can receive calls from PBX to my 2801 but I can?t make calls from 2801 to PBX.

Here is the configuration:

interface BRI0/2/0

no ip address

isdn switch-type basic-net3

isdn overlap-receiving

isdn protocol-emulate network

isdn layer1-emulate network

isdn incoming-voice voice

isdn send-alerting

isdn static-tei 0

isdn skipsend-idverify

line-power

any ideas

thanks in advance

5 REPLIES
Hall of Fame Super Gold

Re: Cisco ISDN network mode

hi carlos,

1st of all you don't need line-power (needed only for unpowered phones) nor send-alerting (is the default). You may or may not need overlap-receiving.

Second, to place calls you need to configure dial-peer that are the basic building blocks for Cisco VoIP. Search for 'dial-peers basic' and you will get a lot of documetns, pick a basic one.

Finally, you enable debug isdn q931 and term monitor, to see what is going one between the PBX and the router.

New Member

Re: Cisco ISDN network mode

I just remove the line power, send-alerting and overlap-receiving.

When I Make a call to the PBX, this is the q931

Ind i = 0x8183 - Origination address is non-ISDN

Display i = 'Laura Ruiz'

Calling Party Number i = 0x0080, '4130'

Plan:Unknown, Type:Unknown

Called Party Number i = 0x80, '33902405555'

Plan:Unknown, Type:Unknown

*Jan 15 09:52:01.964: ISDN BR0/2/0 **ERROR**: CCBRI_Go: NO CCB Src->L3 call id 0

x8002, event 0x95 ces 0

*Jan 15 09:52:01.964: ISDN **ERROR**: Module-CCBRI Function-_Go Error-Event r

eceived for an unrecognized call. Data- 95, 0

*Jan 15 09:52:02.128: ISDN BR0/2/0 Q921: Net RX <- IDREQ ri=7680 ai=127

*Jan 15 09:52:02.128: ISDN BR0/2/0 SERROR: L2_Go: at bailout DLCB is NULL

L2: sapi 63 tei 127 ces 0 ev 0x3

*Jan 15 09:52:02.132: ISDN BR0/2/0 SERROR: L2_Go: at bailout DLCB is NULL

L2: sapi 63 tei 127 ces 0 ev 0x650

*Jan 15 09:52:02.132: ISDN BR0/2/0 SERROR: L2_Go: at bailout DLCB is NULL

L2: sapi 63 tei 127 ces 0 ev 0x650

*Jan 15 09:52:02.132: ISDN BR0/2/0 SERROR: L2_Go: at bailout DLCB is NULL

L2: sap

and when I make a call from the PBX:

L2: sapi 63 tei 127 ces 0 ev 0x3

*Jan 15 09:51:16.739: ISDN BR0/2/0 SERROR: L2_Go: at bailout DLCB is NULL

L2: sapi 63 tei 127 ces 0 ev 0x650

*Jan 15 09:51:16.739: ISDN BR0/2/0 SERROR: L2_Go: at bailout DLCB is NULL

L2: sapi 63 tei 127 ces 0 ev 0x650

*Jan 15 09:51:16.739: ISDN BR0/2/0 SERROR: L2_Go: at bailout DLCB is NULL

L2: sapi 63 tei 127 ces 0 ev 0x650

*Jan 15 09:51:16.739: ISDN BR0/2/0 Q921: Net TX -> IDDENY ri=6656 ai=127

*Jan 15 09:51:16.739: ISDN BR0/2/0 Q921: Net TX -> UI sapi=63 tei=127

*Jan 15 09:51:16.739: ISDN BR0/2/0 Q921: Net TX -> IDCKRQ ri=0 ai=0

*Jan 15 09:51:18.751: ISDN BR0/2/0 Q921: Net RX <- IDREQ ri=6912 ai=127

*Jan 15 09:51:18.751: ISDN BR0/2/0 SERROR: L2_Go: at bailout DLCB is NULL

L2: sapi 63 tei 127 ces 0 ev 0x3

*Jan 15 09:51:18.755: ISDN BR0/2/0 SERROR: L2_Go: at bailout DLCB is NULL

L2: sapi 63 tei 127 ces 0 ev 0x650

*Jan 15 09:51:18.755: ISDN BR0/2/0 SERROR: L2_Go: at bailout DLCB is NULL

L2: sapi 63 tei 127 ces 0 ev 0x650

*Jan 15 09:51:18.755: ISDN BR0/2/0 SERROR: L2_Go: at bailout DLCB is NULL

L2: sapi 63 tei 127 ces 0 ev 0x650

*Jan 15 09:51:18.755: ISDN BR0/2/0 Q921: Net TX -> IDDENY ri=6912 ai=127

*Jan 15 09:51:18.755: ISDN BR0/2/0 Q921: Net TX -> UI sapi=63 tei=127

*Jan 15 09:51:18.755: ISDN BR0/2/0 Q921: Net TX -> IDCKRQ ri=0 ai=0

any ideas?

Hall of Fame Super Gold

Re: Cisco ISDN network mode

Hi,

seems like trouble is at L2. Which IOS are using, can you try something like 12.4(9)T ?

Is the PBX using dynamic or static TEI ?

Would you post show isdn status and show interface ?

New Member

Re: Cisco ISDN network mode

My IOS is 12.4(4)T1

The sh ISDN STA command:

Global ISDN Switchtype = basic-net3

ISDN BRI0/2/0 interface

******* Network side configuration *******

dsl 4, interface ISDN Switchtype = basic-net3

Layer 1 Status:

ACTIVE

Layer 2 Status:

TEI = 0, Ces = 1, SAPI = 0, State = TEI_ASSIGNED

Layer 3 Status:

0 Active Layer 3 Call(s)

Active dsl 4 CCBs = 0

The Free Channel Mask: 0x80000003

I set in my cisco,

isdn static-tei 0

But I don?t know how alcatel works.

Must I remove that line from my configuration?

thanks

Hall of Fame Super Gold

Re: Cisco ISDN network mode

yes, it looks for the IDREQ packet that the switch is set for dynamic TEI.

See:

http://www.cisco.com/warp/public/129/bri-layer2.html

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