Checking your Phone’s Device Certificate | AT&T Office@Hand
Article #73360

This article provides step-by-step instructions for checking your phone’s device certificate.

Device Certificates are unique identifiers used to ensure the integrity and privacy of communications involving devices. It is crucial that the device certificates are factory-installed to ensure that data to set up and configure the phone remains secure and encrypted.

Select from the list of phone models below to view the steps for checking the device certificate on your phone.

• Poly SoundPoint IP Series phones
• Poly VVX Series phones
• Cisco SPA303, SPA504G, SPA508G, SPA509G, and SPA514G
• Cisco SPA525G / SPA525G2
• Yealink T21P, T33G, T42S, T43U, T46S, T46U, T48S, T48U, T53, T53W, T54W, T57W and CP930W
• Yealink W52P and W56P

Poly SoundPoint IP Series phones

1. Press the Menu key.
2. Select Status.
3. Select Platform.
4. Select Phone.
5. Look for Device Certificate.

Poly VVX Series phones

1. Press the Menu key.
2. Select Settings.
3. Select Status.
4. Select Platform.
5. Select Phone.
6. Look for Device Certificate.

Cisco SPA303, SPA504G, SPA508G, SPA509G, and SPA514G

1. Press the Menu key.
2. Select Product Info.
3. Look for Certificate.

Cisco SPA525G / SPA525G2

1. Press the Menu key.
2. Select Status.
3. Select Product Information.
4. Look for Certificate.

Yealink T21P, T33G, T42S, T43U, T46S, T46U, T48S, T48U, T53, T53W, T54W, T57W and CP930W

1. Press the OK key.
2. Select More.
3. Select Phone.
4. Look for Device Certificate.

Yealink W52P and W56P

1. Press the OK key.
2. Select Status.
3. Select Base.
4. Look for Device Certificate.

Keywords: AT&T Office@Hand, Device Certificate, desk phone

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