![](/images/new-backgrounds/1106499/10649961x1.webp)
Linking PBX Users with E&M Trunk Lines
Linking PBX Users with E&M Trunk Lines
The following example shows how to configure Voice over IP to link PBX users with E&M trunk lines.
In this example, a company wants to connect two offices: one in San Jose, California and the other in Salt Lake City, Utah. Each office has an internal telephone network using PBX, connected to the voice network by an E&M interface. Both the Salt Lake City and the San Jose offices are using E&M Port Type II, with
Figure 13 illustrates the topology of this connection example.
Figure 13 Linking PBX Users with E&M Trunk Lines Example
172.16.1.123 172.16.65.182
Dial peer | Voice port | ||
1 POTS | 1/0/0 | ||
PBX |
| Router SJ | |
|
|
|
|
|
|
|
|
IP cloud
Voice port | Dial peer | ||
1/0/0 | 1 POTS | ||
Router SLC |
| PBX | |
|
|
|
|
|
|
|
|
Dial peer | Voice port | Voice port | Dial peer |
2 POTS | 1/0/1 | 1/0/1 | 2 POTS |
San Jose | Salt Lake City | ||
| (408) |
| (801) |
S6616
Note This example assumes that the company already has established a working IP connection between its two remote offices.
Configuration for Router SJ
hostname sanjose
!Configure pots dial peer 1
port 1/0/0
!Configure pots dial peer 2
port 1/0/1
!Configure voip dial peer 3
session target ipv4:172.16.65.182
!Configure the E&M interface
signal immediate operation
Configuring Voice over IP for the Cisco 3600 Series