can't ping a point-to-point interface over frame relay

hello,

i created a frame relay network and configured 2 routers using point-to-point sub-interfaces everything is UP but i cannot ping, here is the config:

Router1:

R1#show run
Building configuration...

*Mar  1 00:56:36.267: %SYS-5-CONFIG_I: Configured from console by console
Current configuration : 1099 bytes
!
version 12.4
service timestamps debug datetime msec
service timestamps log datetime msec
no service password-encryption
!
hostname R1
!
boot-start-marker
boot-end-marker
!
!
no aaa new-model
memory-size iomem 5
!
!
ip cef
!
!
!
!
!        
!
!
!
!
!
!
!
!
!
!
!
!
!
!
!
!
!
!
!
interface Loopback0
 ip address 172.16.101.1 255.255.255.0
!
interface FastEthernet0/0
 ip address 10.1.12.1 255.255.255.0
 duplex auto
 speed auto
!
interface Serial1/0
 no ip address
 encapsulation frame-relay
 serial restart-delay 0
 clock rate 64000
 frame-relay map ip 10.1.13.3 103 broadcast
 no frame-relay inverse-arp
!
interface Serial1/0.103 point-to-point
 ip address 10.1.13.1 255.255.255.0
!
interface Serial1/1
 no ip address
 shutdown
 serial restart-delay 0
!
interface Serial1/2
 no ip address
 shutdown
 serial restart-delay 0
!
interface Serial1/3
 no ip address
 shutdown
 serial restart-delay 0
!
interface FastEthernet2/0
 no ip address
 shutdown
 duplex auto
 speed auto
!
ip http server
no ip http secure-server
!
!
!
!
!
!
control-plane
!        
!
!
!
!
!
!
!
!
!
line con 0
line aux 0
line vty 0 4
!
!
end

R1#


-----------------------------

Router2:


R3#show run
Building configuration...

Current configuration : 1021 bytes
!
version 12.4
service timestamps debug datetime msec
service timestamps log datetime msec
no service password-encryption
!
hostname R3
!
boot-start-marker
boot-end-marker
!
!
no aaa new-model
memory-size iomem 5
!
!
ip cef
!
!
!
!
!        
!
!
!
!
!
!
!
!
!
!
!
!
!
!
!
!
!
!
!
interface Loopback0
 ip address 172.16.103.3 255.255.255.0
!
interface Serial0/0
 no ip address
 shutdown
 serial restart-delay 0
!
interface Serial0/1
 no ip address
 encapsulation frame-relay
 serial restart-delay 0
 clock rate 64000
 frame-relay map ip 10.1.13.1 301 broadcast
 no frame-relay inverse-arp
!
interface Serial0/1.301 point-to-point
 ip address 10.1.13.3 255.255.255.0
!
interface Serial0/2
 no ip address
 shutdown
 serial restart-delay 0
!
interface Serial0/3
 no ip address
 shutdown
 serial restart-delay 0
!
interface FastEthernet1/0
 ip address 10.1.35.3 255.255.255.0
 duplex auto
 speed auto
!
ip http server
no ip http secure-server
!
!
!
!
!
!
control-plane
!
!
!
!
!
!
!        
!
!
!
line con 0
line aux 0
line vty 0 4
!
!
end

R3#


--------------------------------

Frame Relay Switch config :

FR1#show run
Building configuration...

Current configuration : 984 bytes
!
version 12.4
service timestamps debug datetime msec
service timestamps log datetime msec
no service password-encryption
!
hostname FR1
!
boot-start-marker
boot-end-marker
!
!
no aaa new-model
memory-size iomem 5
!
!
ip cef
!
!
!
frame-relay switching
!        
!
!
!
!
!
!
!
!
!
!
!
!
!
!
!
!
!
!
!
!
interface Serial0/0
 no ip address
 encapsulation frame-relay
 serial restart-delay 0
 clock rate 64000
 frame-relay lmi-type cisco
 frame-relay intf-type dce
 frame-relay route 103 interface Serial0/1 301
!
interface Serial0/1
 no ip address
 encapsulation frame-relay
 serial restart-delay 0
 clock rate 64000
 frame-relay lmi-type cisco
 frame-relay intf-type dce
 frame-relay route 301 interface Serial0/0 103
!
interface Serial0/2
 no ip address
 shutdown
 serial restart-delay 0
!
interface Serial0/3
 no ip address
 shutdown
 serial restart-delay 0
!
ip http server
no ip http secure-server
!
!
!
!
!
!
control-plane
!
!
!
!
!
!
!
!
!
!
line con 0
line aux 0
line vty 0 4
!
!
end

FR1#


thank you