NEC Univerge SV8100 Features And Specifications Manual page 1562

Issue 8.01
The setting in PRG 99-01-60 affects SIP messages when using the Call Forward with Both

Ring feature (Twinning). For the uMobility and Desk phone to work together properly, this
must be set to 1 (On). The default is 0 (Off).
The following conditions apply when using an iPhone®:

Call handoff between WiFi and cellular domains is supported but can only be accomplished

manually. Automatic handoff is not supported.
An iPhone limitation in allowing multitasking for third party applications causes the uMobility

client to exit when there is an incoming call to the cellular number or the user starts an
additional application.
If a call is made via uMobility while in the cell domain, when the call has ends the user is

presented with the native iPhone dialer.
If the uMobility client application is activated while on a WiFi call, features such as Mute,

Speaker phone and DND are deactivated when a hand-off call to cellular is answered.
If the uMobility client application is activated while on a cellular call, Mute and Speaker phone

are deactivated when a hand-off to WiFi happens.
When using Call Transfer the following conditions apply to all client devices:

Transfer is only supported when the uMobility client phone is in the WiFi domain.

Only Supervised/Announce Call Transfer of CO or internal calls is supported from any

uMobility client device.
Direct/Blind/Unsupervised Call Transfer of CO or internal calls is not supported from any

uMobility client device.
When using code restriction for uMobility client devices the following conditions apply to all

client devices:
Code Restriction Override is not supported.

Code Restriction should be applied to the uMobility client device only.

Code Restriction should not be applied to any of the uMC Server ports.

When using voice mail the following conditions apply to all client devices:

Voice mail Message Waiting Indication (MWI) is only supported when the uMobility mobile

device resides in the WiFi domain.
The uMobility feature cannot be used with VM8000 InMail.

The uMobility feature cannot be used with UCB (Unified Communications for Business).

If the uMobility client is in the cell domain and the "Reject" or "Decline" option is selected for an

incoming call, the caller goes to the cell carrier voice mail, not the enterprise voice mail.
For Call Forwarding the following conditions apply to all client devices:

Call Forwarding with Both Ring is used to have calls directed to the desk phone ring at both

the desk phone and the uMobility client phone. To get callers to voice mail, the uMobility client
phone should then be forwarded BNA to voice mail. The caller goes to the mailbox of the desk
phone. Refer to Call Forward with Both Ring for more information.
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UNIVERGE SV8100
uMobility