I am using AS5300 with 4 PRIs for incoming dialup connection. My normal dialup connections through PSTN lines are working fine. But when we dial using ISDN bri channel, the connection gets established but it do not passes the traffic. The PC gets the IP assigned but could not ping even to the RAS. When we dial to other brand servers from the same PC and ISDN line, it works normally. Here is configuration of Serial interface for reference. interface Serial0:15 ip unnumbered FastEthernet0 no ip directed-broadcast encapsulation ppp dialer idle-timeout 3600 isdn switch-type primary-net5 isdn incoming-voice modem peer default ip address pool ippool fair-queue 64 256 0 no cdp enable ppp authentication pap ! Look at the second route entry, showing the connected isdn bri to serial 0:15 (ISDN PRI D channel). I tried pinging to the customer address but no success. Routing table of the windows NT client is also attached which also shows that it has accepted the IP address assigned by the AS5300. Pls note that both attached routing tables are created dynamically by the systems (AS5300 & Win NT). AS5300#sh ip route Codes: C - connected, S - static, I - IGRP, R - RIP, M - mobile, B - BGP D - EIGRP, EX - EIGRP external, O - OSPF, IA - OSPF inter area N1 - OSPF NSSA external type 1, N2 - OSPF NSSA external type 2 E1 - OSPF external type 1, E2 - OSPF external type 2, E - EGP i - IS-IS, L1 - IS-IS level-1, L2 - IS-IS level-2, * - candidate default U - per-user static route, o - ODR, P - periodic downloaded static route T - traffic engineered route Gateway of last resort is x.98.14.1 to network 0.0.0.0 x.0.0.0/8 is variably subnetted, 15 subnets, 2 masks C x.98.14.80/32 is directly connected, Async21 C x.98.14.86/32 is directly connected, Serial0:15 C x.98.14.65/32 is directly connected, Async23 C x.98.14.74/32 is directly connected, Async11 C x.98.14.115/32 is directly connected, Async98 C x.98.14.117/32 is directly connected, Async51 C x.98.14.122/32 is directly connected, Async59 C x.98.14.120/32 is directly connected, Async114 C x.98.14.0/24 is directly connected, FastEthernet0 C x.98.14.35/32 is directly connected, Async88 C x.98.14.33/32 is directly connected, Async10 C x.98.14.37/32 is directly connected, Async70 C x.98.14.242/32 is directly connected, Async9 C x.98.14.241/32 is directly connected, Async35 C x.98.14.138/32 is directly connected, Async52 C y.168.50.0/24 is directly connected, FastEthernet0 S* 0.0.0.0/0 [1/0] via x.98.14.1 AS5300#ping x.98.14.86 Routing table for Windows NT system, dialing through isdn bri to 5300. Note that the system has accepted the IP address and the address has become the default route for the outbound traffic. =========================================================================== Interface List 0x1 ........................... MS TCP Loopback interface 0x2 ...00 00 00 00 00 00 ...... NdisWan Adapter 0x3 ...00 00 00 00 00 00 ...... NdisWan Adapter 0x4 ...00 01 70 b3 5f 85 ...... NdisWan Adapter 0x5 ...00 c0 f0 28 ad d9 ...... Realtek RTL8029(AS) Ethernet Adapt 0x6 ...00 e0 4c 39 03 b9 ...... Realtek RTL8139 PCI Fast Ethernet Adapter driver(4.0) 0x7 ...00 00 00 00 00 00 ...... NdisWan Adapter 0x8 ...00 00 00 00 00 00 ...... NdisWan Adapter =========================================================================== =========================================================================== Active Routes: Network Destination Netmask Gateway Interface Metric 0.0.0.0 0.0.0.0 x.98.14.86 x.98.14.86 1 x.0.0.0 255.0.0.0 x.98.14.86 x.98.14.86 1 x.98.14.86 255.255.255.255 127.0.0.1 127.0.0.1 1 x.255.255.255 255.255.255.255 x.98.14.86 x.98.14.86 1 127.0.0.0 255.0.0.0 127.0.0.1 127.0.0.1 1 150.107.0.0 255.255.0.0 150.107.1.253 150.107.1.253 2 150.107.1.253 255.255.255.255 127.0.0.1 127.0.0.1 1 150.107.255.255 255.255.255.255 150.107.1.253 150.107.1.253 1 172.16.0.0 255.255.0.0 172.16.1.253 172.16.1.253 2 172.16.1.253 255.255.255.255 127.0.0.1 127.0.0.1 1 172.16.255.255 255.255.255.255 172.16.1.253 172.16.1.253 1 224.0.0.0 224.0.0.0 x.98.14.86 x.98.14.86 1 224.0.0.0 224.0.0.0 150.107.1.253 150.107.1.253 1 224.0.0.0 224.0.0.0 172.16.1.253 172.16.1.253 1 255.255.255.255 255.255.255.255 172.16.1.253 2 1 =========================================================================== _________________________________ FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]