Connectivity Issue between ASA 5520 firewall and Cisco Call Manager

Question

Recently i have installed ASA 5520 firewall, Below is the detail for my network
ASA 5520 inside ip: 10.12.10.2/24
Cisco Switch 3560 IP: 10.12.10.1/24 for Data and 10.12.110.2/24 for Voice
Cisco Call Manager 3825 IP: 10.12.110.2/24
The users and the IP phone are getting IP from the DHCP server which configured on cisco 3560 Switch.
the Default Gateway for Data user is 10.12.10.2/24 and
for the voice users is 10.12.110.2/24
now the problem is that the users is not able to ping 10.12.110.2 call manager. please if somebody can help in this regard. i will appreciate the prompt response against this issues.

Answer 1

Actually i don't wana to insert new subnet and complicate the nework. i need a simple way to solve the problem. below is the details for the asa 5520 config.
ASA Version 8.2(1)
name x.x.x.x Mobily
interface GigabitEthernet0/0
 nameif inside
 security-level 99
 ip address 10.12.10.2 255.255.255.0
interface GigabitEthernet0/1
 nameif outside
 security-level 0
 ip address x.x.x.x 255.255.255.252
object-group service DM_INLINE_SERVICE_1
 service-object tcp-udp
 service-object ip
 service-object icmp
 service-object udp
 service-object tcp eq ftp
 service-object tcp eq www
 service-object tcp eq https
 service-object tcp eq ssh
 service-object tcp eq telnet
access-list RA_VPN_splitTunnelAcl_1 standard permit Inside-Network 255.255.255.0
access-list RA_VPN_splitTunnelAcl standard permit Inside-Network 255.255.255.0
access-list inside_nat0_outbound extended permit ip Inside-Network 255.255.255.0 10.12.10.16 255.255.255.240
access-list inside_nat0_outbound extended permit object-group DM_INLINE_SERVICE_1 10.12.10.16 255.255.255.240 Inside-Network 255.255.255.0
access-list inside_nat0_outbound_1 extended permit ip Inside-Network 255.255.255.0 10.12.10.16 255.255.255.240
pager lines 24
logging enable
logging asdm informational
mtu inside 1500
mtu outside 1500
mtu mgmt 1500
ip local pool VPN-Pool 172.16.1.1-172.16.1.30 mask 255.255.255.0
ip local pool VPN-Users 10.12.10.21-10.12.10.30 mask 255.255.255.0
no failover
icmp unreachable rate-limit 1 burst-size 1
asdm image disk0:/asdm-641.bin
asdm history enable
arp timeout 14400
global (inside) 2 interface
global (outside) 1 interface
nat (inside) 0 access-list inside_nat0_outbound_1
nat (inside) 1 Inside-Network 255.255.255.0
route outside 0.0.0.0 0.0.0.0 Mobily 1
timeout xlate 3:00:00
timeout conn 1:00:00 half-closed 0:10:00 udp 0:02:00 icmp 0:00:02
timeout sunrpc 0:10:00 h323 0:05:00 h225 1:00:00 mgcp 0:05:00 mgcp-pat 0:05:00
timeout sip 0:30:00 sip_media 0:02:00 sip-invite 0:03:00 sip-disconnect 0:02:00
timeout sip-provisional-media 0:02:00 uauth 0:05:00 absolute
timeout tcp-proxy-reassembly 0:01:00
dynamic-access-policy-record DfltAccessPolicy
http server enable
http Mgmt-Network 255.255.255.0 mgmt
http Inside-Network 255.255.255.0 inside
no snmp-server location
no snmp-server contact
snmp-server enable traps snmp authentication linkup linkdown coldstart
crypto ipsec transform-set ESP-AES-256-MD5 esp-aes-256 esp-md5-hmac
crypto ipsec transform-set ESP-DES-SHA esp-des esp-sha-hmac
crypto ipsec transform-set ESP-DES-MD5 esp-des esp-md5-hmac
crypto ipsec transform-set ESP-AES-192-MD5 esp-aes-192 esp-md5-hmac
crypto ipsec transform-set ESP-3DES-MD5 esp-3des esp-md5-hmac
crypto ipsec transform-set ESP-AES-256-SHA esp-aes-256 esp-sha-hmac
crypto ipsec transform-set ESP-AES-128-SHA esp-aes esp-sha-hmac
crypto ipsec transform-set ESP-AES-192-SHA esp-aes-192 esp-sha-hmac
crypto ipsec transform-set ESP-AES-128-MD5 esp-aes esp-md5-hmac
crypto ipsec transform-set ESP-3DES-SHA esp-3des esp-sha-hmac
crypto ipsec security-association lifetime seconds 28800
crypto ipsec security-association lifetime kilobytes 4608000
crypto dynamic-map SYSTEM_DEFAULT_CRYPTO_MAP 65535 set pfs
crypto dynamic-map SYSTEM_DEFAULT_CRYPTO_MAP 65535 set transform-set ESP-AES-128-SHA ESP-AES-128-MD5 ESP-AES-192-SHA ESP-AES-192-MD5 ESP-AES-256-SHA ESP-AES-256-MD5 ESP-3DES-SHA ESP-3DES-MD5 ESP-DES-SHA ESP-DES-MD5
crypto map outside_map 65535 ipsec-isakmp dynamic SYSTEM_DEFAULT_CRYPTO_MAP
crypto map outside_map interface outside
crypto isakmp enable outside
crypto isakmp policy 10
 authentication pre-share
 encryption 3des
 hash sha
 group 2
 lifetime 86400
crypto isakmp policy 30
 authentication pre-share
 encryption 3des
 hash md5
 group 2
 lifetime 86400
telnet Inside-Network 255.255.255.0 inside
telnet timeout 5
ssh Inside-Network 255.255.255.255 inside
<--- More --->              ssh timeout 5
console timeout 0
threat-detection basic-threat
threat-detection statistics access-list
no threat-detection statistics tcp-intercept
webvpn
group-policy RA_VPN internal
group-policy RA_VPN attributes
 dns-server value 86.51.34.17 8.8.8.8
 vpn-tunnel-protocol IPSec
 split-tunnel-policy tunnelspecified
 split-tunnel-network-list value RA_VPN_splitTunnelAcl
username admin password LPtK/u1LnvHTA2vO encrypted privilege 15
tunnel-group RA_VPN type remote-access
tunnel-group RA_VPN general-attributes
 address-pool VPN-Users
 default-group-policy RA_VPN
tunnel-group RA_VPN ipsec-attributes
 pre-shared-key *
class-map inspection_default
 match default-inspection-traffic
policy-map type inspect dns preset_dns_map
 parameters
  message-length maximum 512
policy-map global_policy
 class inspection_default
  inspect dns preset_dns_map
  inspect ftp
  inspect h323 h225
  inspect h323 ras
  inspect netbios
  inspect rsh
  inspect rtsp
  inspect skinny 
  inspect esmtp
  inspect sqlnet
  inspect sunrpc
  inspect tftp
  inspect sip 
  inspect xdmcp
service-policy global_policy global
prompt hostname context
Cryptochecksum:e5a64fa92ae465cd7dabd01ce605307d
: end