The voltage of power over Ethernet (PoE) for eSpace 7910, 7950, and 8950 is 48 V.
The power supply voltage of power adapters for eSpace 7910 and 7950 is 5 V.
The power supply voltage of the power adapter for eSpace 8950 is 12 V.
The eSpace 8950 and 7900 series IP phones can be upgraded one by one or in batches.
Upgrading a single phone:
1. Log in to the phone's web page as the administrator and choose Advanced > Upgrade > Manual Upgrade.
2. Click Browse to select an upgrade package.
3. Select local version files to be upgraded, and click Upgrade.
Upgrading 7900 series IP phones in batches:
For details, see Maintenance > Upgrade in the eSpace 7910&7950 IP Phone V200R003C00 Administrator Guide(html)
.
Upgrading eSpace 8950 IP phones in batches:
For details, see Maintenance > Upgrade in the eSpace 8950 IP Phone V200R003C00 Administrator Guide
http://support.huawei.com/enterprise/en/doc/DOC1000067158.
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