PC dialing to a ISDN router

[cxo-179682]

Below are the configuration for an ISDN router to enable PC dialin remotely, but the authentication isn't successful. From the debug mode, I can't see any username or password being exchanged. Please help !!

Building configuration...

Current configuration : 892 bytes

!

version 12.1

service timestamps debug uptime

service timestamps log uptime

no service password-encryption

!

hostname ISDN

!

enable password secret

!

username rsg_chap password 0 secret

!

!

!

!

memory-size iomem 25

ip subnet-zero

!

isdn switch-type basic-net3

!

!

interface BRI0

ip unnumbered FastEthernet0

encapsulation ppp

dialer-group 1

isdn switch-type basic-net3

isdn incoming-voice data

peer default ip address pool ISDN

ppp authentication chap

!

interface FastEthernet0

ip address 173.29.45.35 255.255.255.224

speed auto

!

ip local pool ISDN 173.29.45.40 172.29.45.50

ip classless

ip route 0.0.0.0 0.0.0.0 BRI0

no ip http server

!

dialer-list 1 protocol ip permit

!

line aux 0

line vty 0 3

password cisco

login

line vty 4

password cisco

login

!

no scheduler allocate

end

[makchitale]

Is this a PC with an external teminal adapter making an ISDN call? A V.120 setup? You say that the authentication is not successful means...we do negotiate LCP successfully....correct?

http://www.cisco.com/univercd/cc/td/doc/product/software/ios120/12cgcr/dial_c/dcv120.htm#3779

Try adding "autodetect encapsulation v120" under the BRI 0.

http://www.cisco.com/warp/public/129/28.shtml

Will be interseting to see the following debugs: deb isdn q931 / deb ppp nego / deb ppp authent / deb v120

Thanks,

Mak.

[cxo-179682]

Nope, I'm using an analog modem not connecting to a TA. Will it be possible?

[tepatel]

.

[makchitale]

In that case you will need an internal modem on the router to pass on the analog call based on the bearercap.

Again it depends on what platform this is to support the NM-xDM (to come over BRI).

Thanks, Mak

[cxo-179682]

if that's the case, it means if i need to dial to the isdn router, i'll need an isdn line, right ?

if i were to use analog line, i'll need to convert the analog to digital in order for it to work, which is the digital modem, am i right ?

[makchitale]

Correct....when the call comes in on the isdn link, the call setup message will have a bearercap. If the bearercap represents an isdn call then it will be terminated on the hdlc controller......if it's an analog call then it will be terminated on an internal digital modem (we typically use the "isdn incomming-voice modem" command for the same).

Thanks, Mak.

[cxo-179682]

Thanks, guys.

But is the configuration correct for an isdn dialing ?

[makchitale]

Yes, the config looks good for an ISDN call to terminate on this router.

If you have any trouble on an isdn call , please collect the following debugs:

deb isdn q931 / deb ppp nego.

Thanks, Mak.

[nmoniz]

hello,

i have the same problem as you. Did you solve your problem? Please let me know.

Best regards,

Nuno Moniz

(nuno.moniz@ricmade.pt)