Feature Description Guide
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Paging
Voice-system
features
You can define a paging number to relay audio pages to a group of designated phones. When a caller dials the
paging number, each idle IP phone that is configured with the paging number automatically answers using its
speakerphone mode. Displays on the phones that answer the page show the caller ID that has been set using the
name command under the paging ephone-dn. When the caller finishes speaking the message and hangs up, the
phones are returned to their idle states.
Audio paging provides a one-way voice path to the phones that have been designated to receive paging. It does
not have a press-to-answer option like the intercom feature. A paging group is created using a dummy ephone-dn,
known as the paging ephone-dn, which can be associated with any number of local IP phones. The paging
ephone-dn can be dialed from anywhere, including on-net.
After you have created two or more simple paging groups, you can unite them into combined paging groups. By
creating combined paging groups, you provide phone users with the flexibility to page a small local paging group
(for example, paging four phones in a store’s jewelry department) or to page a combined set of several paging
groups (for example, paging a group that consists of both the jewelry and the accessories departments).
Park
Voice-system
features
The call park feature allows you to place a call on hold at a special extension so you can retrieve it from any other
phone in the system. You can park the call at the extension, known as the call-park slot, by pressing the Park
softkey. Cisco Unified Communications 500 chooses the next available call-park slot and displays that number on
the phone. A user on another phone can then retrieve the call by dialing the extension number of the call-park
slot.
You can define either a single extension number or a range of extension numbers to use as call-park slots. Each
call-park slot can hold one call at a time, so the number of calls that you can park is equal to the number of slots
you create. If the secondary number is used to group calls together, calls are retrieved in the order in which they
were parked; the call that has been parked the longest is the first call retrieved from the call-park slot.
A caller who is parked in a park slot hears the MOH audio stream if the call uses the G.711 codec or if the call
uses G.729 with transcoding; otherwise, the caller hears a tone on hold. Users who attempt to park a call at a
busy slot hear a busy tone.
Parallel hunt
groups (call
blast)
Voice-system
features
In a parallel hunt group, calls simultaneously ring multiple phones. Using parallel hunt groups is also referred to as
application-level forking because it enables the forking of a call to multiple destinations. In versions earlier than
Cisco Unified Communications 500 Version 4.3, only SIP phones support parallel hunt groups. In Cisco Unified
Communications 500 Version 4.3 and later versions, SCCP phones also support voice hunt groups.
You can enable functions similar to parallel hunt groups on SCCP phones by using the ephone-dn overlay feature
for shared lines.
The number of ringing calls that a parallel hunt group can support depends on whether call waiting is enabled on
the SIP phones.
IP phone
password
setting
Users,
phones, and
extensions
You can change your phone password from your User Options webpages. Phone passwords are used for
computer telephony integration/Telephony Application Programming Interface (CTI/TAPI) integrations, extension
mobility, toll-bar override, and user page login.
PBX system
Voice-system
features
When setting up a Cisco Unified Communications 500 system, you need to decide if call handling should be
similar to that of a PBX, similar to that of a keyswitch, or a hybrid of both. The Cisco Unified Communications 500
Series provides significant flexibility in this area, but you must have a clear understanding of the model that you
choose. The simplest model is the PBX model, in which most of the IP phones in your system have a single,
unique extension number. Incoming PSTN calls are routed to a receptionist at an attendant console or to an
automated attendant. Phone users can be in separate offices or geographically separated and therefore often use
the telephone to contact each other.
Peer ephone
hunt groups
Voice-system
features
This feature defines a hunt group in which the first extension to ring is the number to the right (in the list) of the
extension that was the last one to ring when the hunt group was last called. Ringing proceeds in a circular
manner, left to right, for the number of hops specified when the ephone hunt group is defined.
Personal
address book
(PAB)
Users,
phones, and
extensions
PAB is a directory for personal contacts. It is stored locally on the Cisco SPA525G 5-line IP Phone with Color
Display.
Personal
speed dial
Users,
phones, and
extensions
With this feature, you can configure a maximum of 24 personal speed-dial numbers per phone; the numbers are
accessed through the Directory, Personal Speed Dial listing. Each phone can have up to 99 fast dials. You can
configure each phone using the Options webpage or through the phone using Services, MyPhoneApps, Speed
dial.
Phantom
extension
Users,
phones, and
extensions
This feature allows you to create an extension without associating it with any phone.
Phantom
mailbox
Voicemail
This feature lets you create a mailbox without associating it with any phone.