I'm not sure of the format of local numbers in Taiwan. I used 9 digits as an example.
OBi#1 to make outbound calls on OBi#2
On the OBi#1
Set Speed Dial#2: PP(ob200222222)
200222222 = OBi number of the OBi#2
Physical Interfaces -> Phone port
Add after the beginning parentheses of the DigitMap:
886xxxxxxxxx|
Add to beginning of the OutboundCallRoute:
{(<2*>886xxxxxxxxx):pp},
2* points to Speed Dial #2
On the OBi#2
Voice Services -> OBiTalk Service
Replace InboundCallRoute:
{(200111111)>(<886:>xxxxxxxxx):li},{ph}
200111111 = OBi number of the OBi#1
886123456789 dialed on OBi#1 will be routed out Line on OBi#2 as 123456789
OBi#2 to reach AA on OBi#1
On OBi#2
Set Speed Dial#1: PP(ob200111111)
200111111 = OBi number of the OBi#1
Physical Interfaces -> Line port
Replace InboundCallRoute:
{(123456789):pp(1*555)},{ph}
On the OBi#1
Voice Services -> OBiTalk Service
Replace InboundCallRoute:
{(200222222)>(555):aa},{ph}
Inbound call on OBi#2 Line with CID 123456789 will be routed to AA on OBi#1