Приветствую всех!
У меня ситуация такая - в центральном офисе стоит АТС Panasonic и PIX 515 Version 6.3(3), который вяжется по IPsec VPN с удаленным офисом к Cisco 831, за которой стоит АТС Panasonic c IP (H323) карточкой. Звонки из центрального офиса идут через VPN в удаленный офис без проблем, звонки из удаленного офиса не проходят (при наборе номера слышны короткие гудки). Включение, выключение fixup результата не дали никакого. Конфиг:

PIX Version 6.3(3)
interface ethernet0 auto
interface ethernet1 auto
nameif ethernet0 outside security0
nameif ethernet1 inside security100
enable password ********* encrypted
passwd ********* encrypted
hostname pixfirewall
domain-name ciscopix.com
fixup protocol dns maximum-length 512
fixup protocol ftp 21
fixup protocol h323 h225 1720
fixup protocol h323 ras 1718-1719
fixup protocol http 80
fixup protocol rsh 514
fixup protocol rtsp 554
fixup protocol sip 5060
fixup protocol sip udp 5060
fixup protocol skinny 2000
no fixup protocol smtp 25
fixup protocol sqlnet 1521
fixup protocol tftp 69
names
access-list out permit ip any any
access-list out permit icmp any any
access-list acl_to_net2 permit ip 192.168.0.0 255.255.255.0 192.168.2.0 255.255.
255.0
access-list acl_to_net3 permit ip 192.168.0.0 255.255.255.0 192.168.3.0 255.255.
255.0
pager lines 24
logging on
logging console informational
logging monitor informational
logging history informational
logging host inside 192.168.0.112
mtu outside 1500
mtu inside 1500
ip address outside 80.*.*.* 255.255.255.224
ip address inside 192.168.0.253 255.255.255.0
ip audit info action alarm
ip audit attack action alarm
pdm location 192.168.0.0 255.255.0.0 outside
pdm location 0.0.0.0 0.0.0.0 outside
pdm location 192.168.0.112 255.255.255.255 inside
pdm location 192.168.0.248 255.255.255.255 inside
pdm location 192.168.0.249 255.255.255.255 inside
pdm location 192.168.0.250 255.255.255.255 inside
pdm location 192.168.0.251 255.255.255.255 inside
pdm location 192.168.0.252 255.255.255.255 inside
pdm location 192.168.0.254 255.255.255.255 inside
pdm location 192.168.2.0 255.255.255.0 outside
pdm logging informational 100
pdm history enable
arp timeout 14400
access-group out in interface outside
route outside 0.0.0.0 0.0.0.0 80.253.196.97 1
timeout xlate 3:00:00
timeout conn 1:00:00 half-closed 0:10:00 udp 0:02:00 rpc 0:10:00 h225 1:00:00
timeout h323 0:05:00 mgcp 0:05:00 sip 0:30:00 sip_media 0:02:00
timeout uauth 0:05:00 absolute
aaa-server TACACS+ protocol tacacs+
aaa-server RADIUS protocol radius
aaa-server LOCAL protocol local
http server enable
http 192.168.0.112 255.255.255.255 inside
http 192.168.0.248 255.255.255.255 inside
http 192.168.0.249 255.255.255.255 inside
http 192.168.0.250 255.255.255.255 inside
http 192.168.0.251 255.255.255.255 inside
http 192.168.0.252 255.255.255.255 inside
no snmp-server location
no snmp-server contact
snmp-server community public
no snmp-server enable traps
floodguard enable
sysopt connection permit-ipsec
crypto ipsec transform-set avalanche esp-des esp-md5-hmac
crypto ipsec security-association lifetime seconds 3600
crypto map forsberg 21 ipsec-isakmp
crypto map forsberg 21 match address acl_to_net2
crypto map forsberg 21 set peer 81.*.*.*
crypto map forsberg 21 set transform-set avalanche
crypto map forsberg 31 ipsec-isakmp
crypto map forsberg 31 match address acl_to_net3
crypto map forsberg 31 set peer 82.*.*.*
crypto map forsberg 31 set transform-set avalanche
crypto map forsberg interface outside
isakmp enable outside
isakmp key ******** address 81.*.*.* netmask 255.255.255.255
isakmp key ******** address 82.*.*.* netmask 255.255.255.255
isakmp identity address
isakmp policy 21 authentication pre-share
isakmp policy 21 encryption des
isakmp policy 21 hash md5
isakmp policy 21 group 1
isakmp policy 21 lifetime 86400
telnet 192.168.0.112 255.255.255.255 inside
telnet 192.168.0.251 255.255.255.255 inside
telnet 192.168.0.252 255.255.255.255 inside
telnet 192.168.0.253 255.255.255.255 inside
telnet 192.168.0.254 255.255.255.255 inside
telnet timeout 60
ssh timeout 5
console timeout 0
terminal width 80
Cryptochecksum:a0d93dd92630ad5ec27ebf1ebe7829b7
: end

Может есть возможность выделить станцию в некий DMZ (интерфейса только два), может исключить голос из процесса криптования (в оба направления)
В любом случае, спасибо за внимание