Policy NAT on Cisco ASA 9.2

Task:
Server on the server's VLAN must connect to the SIP server on ISP side.
ISP give SIP trunk behind VLAN. SIP server on ISP side permit traffic only from 10.60.122.2, ISP side of that VLAN have address 10.60.122.1. Because ASA don't have Policy based routing i create Policy NAT rule for this task,

 I terminate this VLAN on cisco ASA 5555-x

interface Port-channel2.193
 vlan 193
 nameif mts_sip_int
 security-level 100
 ip address 10.60.122.2 255.255.255.0

 and add static route

route mts_sip_int 212.248.28.* 255.255.255.255 10.60.122.1 1

SIP server is available.

dat2-fw1#  ping  212.248.28.*
Type escape sequence to abort.
Sending 5, 100-byte ICMP Echos to 212.248.28.*, timeout is 2 seconds:
!!!!!
Success rate is 100 percent (5/5), round-trip min/avg/max = 1/14/20 ms

now i can create policy NAT that translate only server(10.0.151.16 signaling tcp 5060 and  udp  range 49152 65535  for VOICE)

create server object

object network srv-dat2-medvx1_for_mts_sip
 host 10.0.151.116

create SIP server object

object network mts_sip_gateway
 host 212.248.28.*

and NAT translation

nat (inside,mts_sip_int) source static srv-dat2-medvx1_for_mts_sip interface destination static mts_sip_gateway mts_sip_gateway

and add lines to inside ACL

access-list internal_in extended permit udp object srv-dat2-medvx1_for_mts_sip object mts_sip_gateway range 49152 65535
access-list internal_in extended permit udp object srv-dat2-medvx1_for_mts_sip object mts_sip_gateway eq sip