In this example, West users can dial 5 and a four-digit extension to reach telephones in the East office. East users can dial 5 and a four-digit extension to reach telephones in the West office.

The West router connects to the PBX through an E&M VIC port 0/0. This port is associated with a POTS dial peer for incoming calls. But you no longer need to associate every telephone number with its own port. Instead, you can configure a local dial peer as if all the West telephones (represented by a wildcard destination pattern) are connected directly to this port, as shown in the following commands:

West> enable

Password:

West# configure terminal

West(config)# dial-peer voice 111 pots

West(config-dial-peer)#destination-pattern 1408555....

West(config-dial-peer)# port 0/0

Configure VoIP dial peers for outgoing calls and associate destination phone numbers on the East router with that router IP address, as shown in Figure 21, and in the following commands:

West(config)# dial-peer

voice 121 voip

West(config-dial-peer)#

destination-pattern 1919555....

West(config-dial-peer)#

session target ipv4:192.168.11.3

West(config-dial-peer)#

exit

West(config)#

 

Figure 21 Linking PBXs over the IP Network (Remote Dial Peers)

408 555-xxxx

PBX

E&M VIC

0/0192.168.11.3

West

IP cloud

East

 

919 555-xxxx

PBX

 

dial-peer voice 121 voip

 

destination-pattern 1919555….

 

session target ipv4:192.168.11.3

 

num-exp 5…. 1919555….

Source

Destination

22343

Now configure number expansion so that numbers beginning with 5 (belonging to the East office) and sent by the West PBX to the West router are expanded into the full destination pattern:

West(config)# num-exp 5....

1919555....

Note You do not need to configure number expansion for calls from one West telephone to another West telephone because the PBX switches those calls.

Finally, enter the following global configuration voice-portcommand to configure the E&M port:

West(config)# voice-port 0/0

West(config-voice-port)# signal immediate

West(config-voice-port)# operation 4-wire

West(config-voice-port)# type 2

West(config-voice-port)# shut

West(config-voice-port)# no shut

Note For these commands to take effect, you have to cycle the port by using the shutdown and no shutdown commands.

Note Configure the PBX to pass all dual-tone multifrequency (DTMF) signals to the router.

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Cisco Systems 1760 quick start Linking PBXs over the IP Network Remote Dial Peers

1760 specifications

The Cisco Systems 1760 series routers are part of Cisco’s popular line of integrated services routers, designed primarily for small to medium-sized businesses and branch offices. The 1760 series was introduced to provide robust connectivity and routing solutions that facilitate secure and reliable networking. Aimed at offering flexibility, these routers integrate multiple functionalities to enhance operational performance.

One of the main features of the Cisco 1760 router is its modularity. It supports various interface and service modules that allow for customization based on specific networking needs. This modular design enables businesses to expand their networking capabilities over time without necessitating a complete hardware overhaul. The router typically comes equipped with two WAN slots and numerous interface options, including Fast Ethernet and serial interfaces.

The 1760 series routers also support advanced security features, providing businesses with a secure environment for their data transmissions. Built-in firewall capabilities, along with support for Virtual Private Network (VPN) protocols, ensure that sensitive information remains protected. Furthermore, the integration of IPsec and MPLS security features assists organizations in maintaining secure and scalable connections across diverse networks.

Another characteristic of the Cisco 1760 is its support for various technologies, including Quality of Service (QoS). QoS functionality allows network administrators to prioritize traffic, ensuring that critical applications receive the bandwidth they require while minimizing latency. This ability is particularly valuable in environments where voice, video, and essential data applications compete for resources.

The router’s ease of management is also noteworthy. With Cisco’s IOS (Internetwork Operating System), the 1760 provides a user-friendly interface allowing for straightforward configuration and monitoring. The simplicity in managing the network devices helps reduce the burden on IT personnel and enhances overall operational efficiency.

Further enhancing the router’s capabilities is its support for voice over IP (VoIP) applications, making it an ideal choice for organizations looking to implement modern telephony solutions. The ability to support multiple voice channels while maintaining adequate data throughput positions the 1760 as an attractive option for businesses transitioning to unified communications.

In summary, the Cisco Systems 1760 series routers exhibit a harmonious blend of modularity, robust security, traffic management, and VoIP support. They effectively meet the demands of modern networking environments, making them a reliable choice for organizations aiming to streamline operations while ensuring secure connectivity. With their adaptable design, these routers can serve as a powerful backbone for enterprise networking needs.