Why my AT&T Syn248 SB35031 deskset cannot make or receive phone calls?
Your AT&T Telephone deskset might not be synchronized or connected to the LAN. Verify that the Deskset Status is Synchronized by pressing (MENU) –> 4. Also, ensure that the Ethernet cable is securely plugged into the Deskset network port and your office LAN.
How to resolve an unresponsive AT&T Syn248 SB35031?
To resolve a sluggish, unresponsive, or unusually behaving device, reset it by using a pen or paper clip to press the RESET button on the back of the Deskset for less than five seconds, or by removing and restoring AC power.
What to do if AT&T Syn248 SB35031 screen is blank?
There may be no power or the Deskset may need to be reset. Reset the Deskset to factory defaults. Disconnect the LAN cable and insert a pen or paper clip into the reset hole and press for more than five seconds.
Why do I hear static on my AT&T Telephone?
You may be experiencing network problems. Your LAN administrator should ensure the following minimum guidelines are met: A switched network topology is recommended (using standard 10/100 Ethernet switches that carry traffic at a nominal rate of 100 Mbit/s). The office network infrastructure should use Cat.-5 wiring. Do not connect a network server PC to the PC port on the Deskset. Make sure the network cable is securely plugged in. If you tug on the cable, the plug should remain inserted.
How to resolve a blank screen on AT&T Telephone?
To resolve a blank screen or a device that does not work at all, ensure the AC plug is plugged into an electrical outlet not powered by a wall switch. Verify that the AC power outlet has power by plugging in another AC device. If nothing works, contact an electrician or use another power outlet. Check that the DC plug is plugged into the power jack on the device. Allow at least 30 seconds for the device to boot up, as the system devices are not immediately active when powered up or after a power interruption. If your Deskset uses Power over Ethernet (PoE), ask your system administrator to confirm that the PoE switch is working correctly.
Why is there no dial tone on my AT&T Syn248 SB35031?
The handset cord may be plugged into the wrong jack. Ensure the handset cord is plugged into the handset jack on the side of the Deskset. Do not connect the handset cord to the corded headset jack on the back of the Deskset.
Why does my AT&T Syn248 SB35031 deskset not ring?
Your AT&T Telephone deskset may not ring because your system administrator has set your Deskset to ignore incoming calls on selected lines. Your Deskset will not ring for incoming calls on those lines, but it will display an incoming call screen. If you see the incoming call screen, you can answer the call by pressing Answer or the flashing Line key. Also, check if the ringer volume is too low and press the VOL+ key to increase ringer volume.
Why is caller ID not working on my AT&T Telephone?
Caller ID may not be working on your AT&T Telephone because your organization does not subscribe to caller ID service, or you have DSL phone lines without filters installed. Caller ID is a subscription service; you must subscribe to this service from your local telephone service provider. Also, the caller must be calling from an area that supports caller ID, and both you and your caller’s telephone companies must use caller ID compatible equipment. If you have DSL phone lines, confirm that you have a DSL filter plugged in between each Deskset and DSL wall jack. The DSL filter must be plugged into the wall jack, not the Gateway.
What to do if my AT&T Syn248 SB35031 screen displays Network Down?
If your AT&T Telephone screen displays 'Network Down', ensure that the Ethernet cable is plugged into the port marked LAN on the device and into your office LAN. Also, confirm that the Ethernet port light next to the Ethernet port is green. If it is not, unplug the cable and plug it in again. Check if other network devices are communicating with the network. If not, contact your IT administrator.
General| Brand | AT&T |
|---|---|
| Model | Syn248 |
| Model Number | SB35031 |
| Frequency | 1.9 GHz |
| Maximum Handsets Supported | 10 |
| Expandable Handsets Included | 1 |
| Speakerphone | Yes |
| Caller ID | Yes |
| Display | LCD |
| Handsets | 1 |
| Call Waiting | Yes |
| Intercom | Yes |
| Power Source | AC Adapter |
| Color | Black |
| Number of Lines | 1 |
| Headset Jack | Yes |
| Compatible with Syn248 System | Yes |
| Phonebook Memory | 50 numbers |
| Battery Type | NiMH |
| Battery Life | Up to 7 hours talk time |
| Power over Ethernet (PoE) | No |
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