Call Features81During a recording, if there is insufficient free space (30 minutes or 10 minutes left) on the USB flash drive, the IP phonewill prompt you a message (XX minutes left for call recording). If no free space on the USB flash drive during recording,recording is stopped and saved in the USB flash drive automatically.You can also view the storage space of the USB flash drive and check the available recording time before recording,since the insufficient free space may result in call recording failure.Procedure1. Navigate to Menu->USB->Storage Space.Multicast PagingMulticast Paging allows you to easily and quickly broadcast instant audio announcements to users who are listening toa specific multicast group on a specific channel.The IP phone supports the following 31 channels:l 0: Broadcasts are sent to channel 0. Note that the Yealink IP phones running firmware version 80 or earlier can beregarded as listening to channel 0. It is the default channel.l 1 to 25: Broadcasts are sent to channel 1 to 25. We recommend that you specify these channels when broadcastingwith Polycom IP phones which have 25 channels you can listen to.l 26 to 30: Broadcasts are sent to channel 26 to 30. We recommend that you specify these channels when broad-casting with Yealink IP phones running firmware version 81 or later.Note that all IP phones that you want to include in the multicast paging group need to be in the same network, since abroadcast is used. The IP phone can only send/receive broadcasts to/from the listened channels. Other channels’broadcasts will be ignored automatically by the IP phone.TopicsSending Multicast PagingReceiving Multicast PagingManaging a Paging CallSending Multicast PagingYealink IP phone supports up to 31 groups for paging. You can assign a label to each group to identify the phones inthe group, such as All, Sales, or HR.You can set a line key as Multicast Paging key or Paging list key on the phone, which allows you to send announce-ments to the phones with pre-configured multicast address(es) on specific channel(s).NoteMulticast RTP is one way only from the sender to the multicast address(es) (receiver). For outgoing RTP multicasts, all otherexisting calls on the phone will be placed on hold.TopicsSetting a Multicast Paging KeySetting a Paging List KeySetting a Paging GroupDeleting a Paging GroupSending a Paging by a Multicast Paging KeySending Pages by a Paging List Key
