Multilink with 2 bri's

[pgasol]

I have a 1750 with 2 bri's that calls a 3660 with 2 bri's but with the same telephone number.

I need make multilink with the four channels between the 2 routers.

How I should configure this?

Many thanks

[deilert]

1750

config for bri0/0 & bri0/1

interface BRI0/0

encapsulation ppp

dialer rotary-group 1

dialer-group 1

isdn switch-type basic-ni

isdn spid1 xxxxxx

isdn spid2 xxxxxx

interface Dialer1

ip address xxxxxx

encapsulation ppp

dialer in-band

dialer idle-timeout xxx

dialer string 3660phone #

dialer load-threshold 230 either

dialer-group 1

ppp multilink

!

global command

dialer-list 1 protocol ip permit list 100

access-list 100 deny eigrp any any

access-list 100 deny ip any host 224.0.0.10

access-list 100 deny ip any host 255.255.255.255

access-list 100 deny udp any any eq ntp

access-list 100 deny udp any any eq snmp

access-list 100 permit ip any any

3660 config

interface bri

no ip address

encapsulation ppp

dialer rotary-group 1

no fair-queue

ppp multilink

interface Dialer1

ip address xxxxx

no ip directed-broadcast

encapsulation ppp

dialer in-band

dialer idle-timeout 300

dialer hold-queue 100

dialer load-threshold 230 either

ppp multilink