AT&T Synapse Instalační příručka stáhnout pdf (Strana 29)

Synapse Installation Guide Back to Contents

Installation 28

Assigning Telephone Lines and Extensions

This section discusses various telephone line configuration issues to consider.

Providing Limited Telephone Service During AC Power Outages

PSTN Gateway

The fourth line on each PSTN Gateway is a Bypass port that works during AC power

failures. If you have a PSTN line plugged into LINE 4, connect a line-powered analog

telephone to the RJ-11 jack labeled BYPASS for telephone service during power failures.

When power returns, a relay disconnects this emergency bypass line so that the bypass

line cannot be used to eavesdrop on normal calls.

If your telephone lines are part of a hunt group (a telephone company feature that allows

calls to a busy phone number to roll over to the next available telephone line), connect

the line with your main (pilot) telephone number to PSTN Gateway LINE 4.

If your system features both PSTN Gateways and a T1 Gateway, outbound calls are

placed first through the T1 channels by default.

T1 Gateway and SIP Gateway

The T1 Gateway and SIP Gateway provide no analog bypass port. To provide telephone

communication during power outages, either subscribe to at least one analog phone line

and install a PSTN Gateway or use uninterruptible power supplies to provide power to

your computer network, the Synapse T1 Gateway or SIP Gateway, and one or more

system Desksets.

Analog Line Connection Order on PSTN Gateways

For outgoing calls, the system first seizes the lowest idle PSTN port numbers (as labeled

on the PSTN Gateway). PSTN phone lines should be connected to your system with your

busiest incoming line placed in the highest port number on the highest numbered PSTN

Gateway, so that incoming calls are less likely to receive busy signals. For instance, if

your customer service team receives many calls, you would want to plug their phone

lines into higher-numbered PSTN ports.

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AT&T Synapse Instalační příručka Strana 29