ā10-25-2002 10:41 AM - edited ā03-02-2019 02:23 AM
We are trying to carry out a connection ISDN among an equipment 2503 and a modem adtran ISU 2X64; what we desire in carrying out a link to 128kbps and the problem is that alone we achieve to raise it to 64kbps. I enclose I send them the configuraciĆ³n of the equipment and diagram of connection
C3660---------ISU2X64-----------Net ISDN------------C2503.
ser v.35 BRI
C3660#
interface Serial2/1
description Enlace Prueba a Puebla
bandwidth 128
ip address 10.72.64.2 255.255.255.252
encapsulation ppp
dialer in-band
dialer map ip 10.72.64.1 name Metepec broadcast 2193452
dialer-group 1
no fair-queue
pulse-time 1
C2503#.
interface BRI0
description enlace prueba Puebla
ip address 10.72.64.1 255.255.255.252
no ip directed-broadcast
encapsulation ppp
bandwidth 128
dialer idle-timeout 300
dialer map ip 10.72.64.2 name c3660 broadcast 2190580
dialer-group 1
no fair-queue
ppp quality 20
ppp multilink
ā10-26-2002 02:58 PM
To use multilink PPP you also need to issue the following command on the BRI interface:
dialer load-threshold 2 either
You need this to activate the second B-channel when the traffic reaches a certain level. When you pick a low number, the 2nd link should remain active almost all the time.
ā10-28-2002 11:57 AM
Very well, if we want to initiate the conecction to 128, without expecting a threshold of traffic in the interface; that we should configure. On the other hand knows of an reestriccion or configuration specifies for the modem adtran, since this conexion is done well to 128 among equipment cisco; and with the modem alone we reach link of 64kbps
ā10-29-2002 08:01 AM
You can try any of these options on the cisco to bring up 2 links ASAP:
dialer load-threshold 1
ppp multilink link min 2
Not sure about configuration options for the Adtran.
ā11-06-2002 12:49 PM
Thanks by the Tip, already we test an option and i looking that really the call is generated to connect the second canal B, however itself is not achieved to establish the conexion. I enclose the result of a debug, that can comment me about?
20:39:35: CC_CHAN_GetIdleChanbri: dsl 0
20:39:35: Found idle channel B2
20:39:35: ISDN BR0: received HOST_PROCEEDING call_id 0x8103
20:39:35: ISDN BR0: received HOST_ALERTING call_id 0x8103
20:39:35: ISDN BR0: DEV_CALL_PROGRESSING: modem 3A bchan 1, call_id 8103, cause
0
20:39:35: ISDN BR0: HOST_ALERTING: VOICE ERROR 3A: bchan 1, call id 8103
20:39:35: ISDN BR0: received HOST_CONNECT call_id 0x8103
20:39:35: %LINK-3-UPDOWN: Interface BRI0:2, changed state to up
20:39:35: %ISDN-6-CONNECT: Interface BRI0:2 is now connected to 2193452
20:39:36: ISDN BR0: Event: Connected to 2193452 on B2 at 64 Kb/s
20:39:38: ISDN BR0: received HOST_DISCONNECT call_id 0x8103
20:39:38: ISDN BR0: Event: Call to
20:39:38: ISDN BR0: process_disc_ack(): call id 0x8103, ces 1, call type DATA
20:39:38: %ISDN-6-DISCONNECT: Interface BRI0:2 disconnected from 2193452 , call
lasted 2 seconds
20:39:38: %LINK-3-UPDOWN: Interface BRI0:2, changed state to down
20:39:38: ISDN BR0: received HOST_DISCONNECT_ACK call_id 0x8103
20:39:38: ISDN BR0: HOST_DISCONNECT_ACK: call type is DATA
ā11-06-2002 02:49 PM
It looks like the remote Adtran initiated the disconnect; you can have a look at "debug isdn q931" and "debug ppp neg" to confirm, but otherwise you should check the config of the Adtran to see why it's disconnecting.
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