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eSpace 8950 IP Phone V200R003C00 Administrator Guide

Provides information about deployment, operate and maintain the Video Phone.
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Paging Group (For UC2.X)

Paging Group (For UC2.X)


You have obtained panging from the SIP server administrator.


The following table lists the modes supported by the eSpace 8950 to implement the paging group.

Voice Broadcast Mode


Requirements on Recipients


The system uses conference resources to invite paging group members and complete unidirectional transmission of voice. The maximum number of recipients is restricted by conference resources.

You have obtained panging from the SIP server administrator.


The system creates a virtual participant, adds the virtual participant to a conference, and uses the IP multicast function of switches or routers to forward RTP media streams to paging group members to implement the voice broadcast function. This mode occupies only one channel of conference resources, which is used by the virtual participant. To use this mode, all switches and routers through which media streams pass must support the IP multicast function.

You have obtained panging from the SIP server administrator.

To use the multicast function, choose Call Settings > Multicast on the phone web page, enable Multicast.

Figure 5-5 shows the basic service scenario of paging group.

Figure 5-5  Basic service scenario of paging group
  • Basic service scenario

    The service process is as follows:

    1. An initiator dials the access code of a paging group, and speaks after hearing a beep.
    2. The voice broadcast players of all FXS members in the paging group play the voice broadcast, and the IP phones of all unicast and multicast parties respond as follows:
      • If a recipient is idle or has not started a call after picking up the phone, the speaker is automatically started and plays the voice broadcast after a beep.
      • If a recipient is in a call, the voice broadcast is played as a whisper in audio mixing mode.
      • If a recipient has enabled the DND service, the system determines whether to play the voice broadcast to the recipient based on the service priority configured for the paging group.
    3. The initiator stops speaking and hangs up. The voice broadcast is stopped for all recipients.
    • A recipient using an IP phone can press the Hung Up soft button, hands-free button, or headset button to stop listening to the current voice broadcast.
    • By default, all members in a paging group are forced to listen to the voice broadcast.
    • A paging group supports only one channel of voice broadcast at a time. If an initiator is broadcasting, other initiators cannot initiate voice broadcasts.
    • When you have joined multiple paging groups simultaneously, you cannot receive any new paging call if you are the calling party, but can still initiate a channel of paging broadcast if you are the called party.

Configuration Methods

You can configure the paging group using four different methods, as listed in Table 5-27.
Table 5-27  Configuration methods




On the eSight management portal, chooseConfiguration > IP Phone Management, set related parameters on the page that is displayed.

DHCP Option 246

Set related parameters in the configuration file and deliver the new configuration file to the IP phone.


On the phone web page, choose Call Settings > Multicast, set related parameters.

Parameter Settings

Table 5-28 lists the paging group parameters that you must set.

Table 5-28  Parameter description


How to Set

How to Modify the Configuration File


Multicast enable.

Parameter: ServiceRight

Location: Device > Usercfg > Paging

Value: 0 or 1
  • 0: disables Multicast
  • 1: enables Multicast

Default: 0

Example: ServiceRight="1"


Multicast IP address in the A.B.C.D format.

Only IPv4 addresses are supported, and the value ranges from to

Parameter: PagingIP

Location: Device > Usercfg > Paging

Value: Only IPv4 addresses are supported.

Default: There is no default value.


Multicast port number.

Parameter: PagingPort

Location: Device > Usercfg > Paging

Value: The value is a number ranging from 1024 to 65535.

Example: PagingPort="1026"

Group Name

Paging group name displayed on phones of the initiators and recipients of a paging group.

Parameter: PagingGroupName

Location: Device > Usercfg > Paging

Value: The value is a unique and case-insensitive string consisting of 1 to 32 characters.

Example: PagingGroupName="12"

Group Number

Paging group ID that uniquely identifies a paging group.

Parameter: PagingGroupNumber

Location: Device > Usercfg > Paging

Value: The value is a unique and case-insensitive string consisting of 1 to 63 characters.

Example: PagingGroupNumber="12"


Packetization time on IP phones of multicast parties.

Parameter: PagingPtime

Location: Device > Usercfg > Paging

Value: The value is a unique and case-insensitive string consisting of 1 to 63 characters.

Default: 0

Example: PagingPtime="20"


Codec used by IP phones of multicast parties.

Parameter: Pagingcodec

Location: Device > Usercfg > Paging

Value: PCMA, PCMU, G729, AMR-WB, iLBC, G722, G722_24, G722_32.

Default: PCMA

Example: Pagingcodec="PCMA"


Payload value on IP phones of multicast parties.

Parameter: PayloadType

Location: Device > Usercfg > Paging

Value: The value ranges from 96 to 127.

The payload value can be configured only for codecs AMR_WB, iLBC_1520, iLBC_1333, G7221_24, and G7221_32.

Example: PayloadType="8"

Follow-up Procedure

For details, see the eSpace 7910 IP Phone User Guide.
Updated: 2018-09-12

Document ID: EDOC1000067158

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