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This could mean the speaker volume control is turned all the way down (on the back) or there may be a problem with the speaker.  If the speaker volume is se...

This indicates that a user has inadvertently dialed a relay latch command like “*1”, while talking to an entry phone, instead of the normal “**” timed rela...

This normally means that dip switch #3 on the back of the E-30 is set to the Off position, which keeps it in the programming mode.  Dip switch # 3 should be...

You can turn off the steady lights by slightly changing the wiring to the strobe.  In the product manual, it tells you to match the three wires from the str...

The K-1900-5 is producing the continuous touch tones as part of a “restriction” feature.  The “restriction” feature of the K-1900-5 must be disabled in an a...

No, none of our analog emergency phones or entry phones are sensitive to polarity of the analog line connected.  They have a built in “polarity guard’ that ...

We've had an AES-2000 installed at the front door of our apartment building for years and recently switched the telephone line that feeds the AES-2000 f...

The IP phones have DHCP enabled by default but they can be set to a static address.  You must use Viking IP Programming software and connect it to the unit ...

No, the Viking IP phones are based on a simplex design, with automatic voice activated switching.  When the party that answers the call is talking, the spea...

When using cloud-based SIP providers, the “in-band audio call progress” feature must be enabled (“phone settings” tab of Viking IP Programming software).  I...