All Cisco-Network Study Notes: E&M Articulation Anchorage Configuration

E&M Articulation Anchorage Configuration

Configuring an E&M analog block is straightforward. Three key options accept to be set:

■ The signaling E&M signaling type

■ Two- or four-wire operation

■ The E&M type

As an example, accede the cartography apparent in Figure 3-17.

E&M Block Wink Start

Type I Two-Wire

PBX

Inbound DNIS

Outbound DNIS

E&M

1/1/1

1001

1002

1003

2001

2002

2003

2004

Figure 3-17 E&M Agreement Topology

In this example, you accept been assigned to configure a articulation aperture to assignment with an

existing PBX arrangement according to arrangement requirements. You charge set up a articulation gateway

to interface with a PBX to acquiesce the IP phones to alarm the POTS phones application a four-digit

extension.

The agreement requirements are the following:

■ Configure the articulation anchorage to use wink-start signaling.

■ Configure the articulation anchorage to use 2-wire operation mode.

■ Configure the articulation anchorage to use Blazon I E&M signaling.

■ Configure a accepted punch associate for the POTS phones abaft the PBX.

Both abandon of the block charge to accept a analogous configuration. The afterward example

configuration shows an E&M block application wink-start signaling, E&M Blazon I, and twowire

operation. Because E&M supports entering and outbound DNIS, DID abutment is

also configured on the agnate punch peer.

You could again complete the afterward accomplish to configure the E&M articulation port:

Step 1. Enter voice-port agreement mode.

Step 2. Select the admission signaling blazon to bout the telephony affiliation you are

making.

Router(config-voiceport)#signal wink-start

Step 3. Select a specific cabling arrangement for the E&M port.

Router(config-voiceport)#operation 2-wire

Chapter 3: Routing Calls over Analog Articulation Ports 149

Note This command affects alone articulation traffic. If the amiss cable arrangement is specified,

the user ability get articulation cartage in alone one direction.

Also, application this command on a articulation anchorage changes the operation of both articulation ports on a

voice anchorage bore (VPM) card. The articulation anchorage charge be shut bottomward and again opened again

for the new amount to booty effect.

Step 4. Specify the blazon of E&M interface.

Router(config-voiceport)#type 1

Step 5. Activate the articulation port.

Router(config-voiceport)#no shutdown

Step 6. Exit articulation anchorage agreement mode.

Router(config-voiceport)#exit

Step 7. Create a punch associate for the POTS phones.

Router(config)#dial-peer articulation 10 pots

Step 8. Specify the destination arrangement for the POTS phones.

Router(config-dialpeer)#destination-pattern 1...

Step 9. Specify absolute entering dial.

Router(config-dialpeer)#direct-inward-dial

150 Authorized Self-Study Guide: Cisco Articulation over IP (CVOICE)

Note DID is bare back POTS phones alarm IP Phones. In this case we bout the POTS

dial peer. This aforementioned punch associate is additionally acclimated to alarm out to POTS phones.

Step 10. Specify chiffre forwarding all, so that no digits will be bare as they are forwarded

out of the articulation port. By default, alone digits akin by wildcard

characters in the destination-pattern command are forwarded.

Router(config-dialpeer)#forward-digits all

Step 11. Specify the articulation anchorage associated with this punch peer.

Router(config-dialpeer)#port 1/1/1

Example 3-3 shows the complete E&M articulation anchorage configuration.

Example 3-3 E&M Articulation Anchorage Configuration

Router(config)#voice-port 1/1/1