Cisco 2650 - 2650 Router Specifications download pdf (Page 58)

3-16

Cisco IOS Telephony Service, Version 2.02

Chapter 3 Additional Configuration Tasks

Information About Additional Configuration Tasks

Configuring Paging

The audio paging feature operates in a way similar to the intercom, but provides only one-way voice,

with no press-to-answer option. A dummy DN that associates any number of local IP phones is created.

The paging extension number is configured using the existing ephone-dn “number” parameter. Multiple

paging DNs are supported per system. The paging number may be dialed from anywhere, including

on-net calls. The paging audio stream is heard on all selected IP phones that are in the idle state, using

speakerphone mode. The IP phone display shows the “name” information associated with the paging DN

used to activate the page. The paging mechanism supports audio distribution using IP multicast,

replicated unicast, and a mixture of both (so that multicast is used where possible, and unicast is used

for specific phones that cannot be reached using multicast).

To configure paging, complete the following tasks:

• Configuring Paging for a Single Group, page 3-16

• Configuring Paging for Multiple Groups, page 3-18

Configuring Paging for a Single Group

The paging feature configures the ephone-dn number to act as an extension number to broadcast unicast

audio paging to idle Cisco IP phones. Cisco IP phones must be associated with the ephone-dn tag number

of the paging ephone-dn, or need to be included indirectly through a paging group from another paging

Step 4

Router(config-ephone-dn)# intercom directory-number

[barge-in | no-auto-answer] [label label]

Defines the directory number for the Cisco IP phone

that connects with another IP phone for the intercom

feature. The intercom command dedicates a pair of

ephone-dns for use as a “press to talk” two-way

intercom between two IP phones. The barge-in

keyword allows inbound intercom calls to force an

existing call into the call-hold state and allows the

intercom call to be immediately answered. The

no-auto-answer keyword creates a connection for

the IP phone line resembling private line automatic

ringdown (PLAR). The label keyword defines a text

label for the intercom.

Step 5

Repeat step 1 through step 4 for the second Cisco IP phone

that requires the intercom feature.

Note For the intercom feature to work, you must

configure both Cisco IP phones.

Step 6

Router(config-ephone-dn)# exit

Exits ephone-dn configuration mode.

Step 7

Router(config)# ephone tag

(Optional) Enters ephone configuration mode to

Step 8

Router(config-ephone)# button button-number:dn-tag

button-number:dn-tag button-number:dn-tag

(Optional) Assigns a button number to the

Cisco IP phone directory number. The argument

button-number:dn-tag, for example, can use the

values 1:1, 2:4, and 3:14. The third set ephone tag 3

is set to the intercom directory number 14, so that the

third button (directory number) is set to receive the

intercom.

Command Purpose

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