网关求助

susai

语音大神们好： 现在有一台Cisco ISR4331语音网关一台和傻瓜交换机一台  CP8831ip电话2部 这两部电话需要互通，并且可以拨外线 现在出现 IP电话能获取到地址，但是不能注册。4331配置
Building configuration...


Current configuration : 2065 bytes
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! Last configuration change at 08:37:00 UTC Tue Oct 30 2018
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version 15.5
service timestamps debug datetime msec
service timestamps log datetime msec
no platform punt-keepalive disable-kernel-core
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hostname Router
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boot-start-marker
boot-end-marker
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vrf definition Mgmt-intf
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address-family ipv4
exit-address-family
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address-family ipv6
exit-address-family
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! card type command needed for slot/bay 0/1
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no aaa new-model
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ip dhcp pool voice
network 172.28.248.0 255.255.255.0
default-router 172.28.248.1
option 150 ip 172.28.248.1
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subscriber templating
multilink bundle-name authenticated
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voice-card 0/4
no watchdog
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license udi pid ISR4331/K9 sn FDO22251ZK8
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spanning-tree extend system-id
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redundancy
mode none
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vlan internal allocation policy ascending
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interface GigabitEthernet0/0/0
no ip address
shutdown
negotiation auto
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interface GigabitEthernet0/0/1
ip address 172.28.248.1 255.255.255.0
negotiation auto
!
interface GigabitEthernet0/0/2
no ip address
shutdown
negotiation auto
!
interface Service-Engine0/4/0
no ip address
!
interface GigabitEthernet0
vrf forwarding Mgmt-intf
no ip address
shutdown
negotiation auto
!
interface Vlan1
no ip address
shutdown
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ip forward-protocol nd
no ip http server
no ip http secure-server
ip tftp source-interface GigabitEthernet0
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control-plane
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mgcp behavior rsip-range tgcp-only
mgcp behavior comedia-role none
mgcp behavior comedia-check-media-src disable
mgcp behavior comedia-sdp-force disable
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mgcp profile default
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telephony-service
max-ephones 32
max-dn 32
ip source-address 172.28.248.1 port 2000
auto assign 1 to 32
max-conferences 8 gain -6
transfer-system full-consult
create cnf-files version-stamp Jan 01 2002 00:00:00
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ephone-dn  1
number 601
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ephone-dn  2
number 401
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ephone  1
mac-address AC44.F21A.CE4B
type 7960
button  1:1
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line con 0
stopbits 1
line aux 0
stopbits 1
line vty 0 4
login
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!
end

各位大神求指点

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