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Remote IP Feature Phone Installation Manual
Appendix VI:
Discovering the
remote-access IP address
for the remote IP PBX
Either the main office network administrator or the ISP can provide the public gateway address at the
main office. (This address is used by the Remote IP Feature Phone as the IP PBX's remote-access IP
address.) However, in the event the network administrator and the ISP can't be contacted, here is a
simple method for determining the remote-access IP address of the IP PBX.
To find the IP address of the gateway the phone will use as the remote-access IP address, you can run
the TRACERT command (for more information on using this command, see Appendix II) on one of the
PCs, on the main office network, that has access through the router. Normally, any Windows-equipped
PC with Internet and/or e-mail access will have this ability.
1. Click on the Start button and select Run. The Run window will appear.
2. Type command and click on OK. A DOS window will appear.
3. Type tracert -d www.arin.net (where this refers to a Web site; use whichever one
you choose) and press Enter.
4. After a few moment, the TRACERT command should return a display similar to that shown below.
The first public IP address in the list typically will be the internal, or gateway address of the main
office's Internet router. The second address will be the public IP address of the main office router;
the Remote Phone will use this public IP address as the remote-access IP address.
C:\WINDOWS\tracert -d www.arin.net
Tracing route to www.arin.net [192.149.252.22]
over a maximum of 30 hops:
1
1 ms
2
3 ms
3
49 ms
4
47 ms
5
46 ms
6
47 ms
7
52 ms
8
71 ms
9
70 ms
10
69 ms
11
71 ms
12
72 ms
13
72 ms
14
85 ms
15
85 ms
16
86 ms
17
97 ms
18
91 ms
Trace complete.
1
The "-d" option keeps the TRACERT command from resolving host names; this speeds up the process.
App. VI: Discovering the IP PBX's remote-access IP address
1
1 ms
1 ms
10.0.2.1
2 ms
2 ms
168.103.194.150
46 ms
45 ms
168.103.198.254
46 ms
46 ms
168.103.15.29
46 ms
46 ms
205.171.25.89
46 ms
46 ms
205.171.25.138
51 ms
52 ms
205.171.5.169
69 ms
70 ms
205.171.8.146
71 ms
71 ms
205.171.21.150
69 ms
69 ms
205.171.21.102
71 ms
69 ms
205.171.4.250
72 ms
71 ms
152.63.82.194
72 ms
71 ms
152.63.81.14
86 ms
86 ms
152.63.0.198
88 ms
87 ms
152.63.34.37
87 ms
88 ms
146.188.162.165
96 ms
97 ms
157.130.35.6
90 ms
92 ms
192.149.252.22
This would be the IP PBX's
remote-access IP address.
M.1
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