AT&T Synapse Instalační příručka stáhnout pdf (Strana 18)

Synapse Installation Guide Back to Contents

Installation 17

SIP ALG (application-level gateway) functionality may be required if the SIP service

provider does not use hosted NAT traversal.

Extension Assignments

The system assigns the first Deskset to join the network as extension 200. At this point

you can use the Dial Plan Settings page in the WebUI to set a different first digit for

extension numbers for Desksets that will be connected to the network. The WebUI calls

this the Default Phone Extension Prefix. If desired, you should also change the number

of digits from three to four at this point.

The system automatically assigns each additional Deskset an extension number in

ascending order as it is connected to the LAN.

Once the Desksets are connected to the same network, they find each other through

Peer-to-Peer (P2P) discovery protocols and automatically self-configure. Additional

telephony and network configuration is administered through the WebUI.

Even if you unplug a unit, its extension number is reserved. If you want to remove an

extension from the network, you must delete the extension number using the WebUI

Device Management menu. Deletion ensures that the Deskset does not tie up an

extension. You can use the WebUI to change or delete extension numbers.

If your site is one of several Remote Sites using SB67070 SIP Gateways, depending on

your dial plan and other configuration, you may want to ensure that extension numbers

do not overlap with the Remote Sites. You can prevent overlap either by choosing a

unique first digit (Default Phone Extension Prefix) or by restricting your extension

numbers to a range. For example, your site uses 200 to 249, while another site uses 250

to 299.

For more information, see the Synapse Administrator’s Guide at

www.telephones.att.com/synapseguides.

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AT&T Synapse Instalační příručka Strana 18