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Beginner

ISDN: bad High Layer Compat

Hello,

I have a ISDN-Voip gateway, a 1760 (c1700-ipvoice-mz.123-12a.bin), and one sip server and a sip phone, all the call from the isdn are redirected to the sip server. I have 2 isdn bri lines.

The problem is that from different origin of the call it works or he don't, i get a:

*Mar 1 00:57:44.683: ISDN BR2/0 **ERROR**: host_incoming_call: Rx call w/ bad High Layer Compat from phone_number on B1

The origin call that works are from a pstn phone or from the gsm operator of the pstn (national) operator.

It don't work from all the others gsm operators, also from the second isdn line to the first line (or first to one), (but if i put 2 isdn phones directly on the line that works)

my config is:

tdm clock bri-auto

mmi polling-interval 60

no mmi auto-configure

no mmi pvc

mmi snmp-timeout 180

isdn switch-type vn3

!

interface BRI2/0

no ip address

isdn switch-type vn3

isdn incoming-voice voice

!

dial-peer voice 2 voip

application session

incoming called-number .

destination-pattern .

session protocol sipv2

session target ipv4:10.0.0.2

codec g711alaw

!

dial-peer voice 1 pots

application session

destination-pattern 0.........

direct-inward-dial

port 2/0

forward-digits all

!

Anyone have an ideea?

Thanks

Ciprian

2 REPLIES 2
Cisco Employee

Re: ISDN: bad High Layer Compat

If you have a wrong isdn switch-type configured, then you may see this type of issue. So check with isdn line provider about the switch type. Also checkout bug CSCeg40583.

Highlighted
Beginner

Re: ISDN: bad High Layer Compat

yes the switch-type was the problem, eaven if i'm in france, the vn3 is replaced by basic-net3