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See also: Linksys/Sipura SPA-2100 ATA Connection Notes

See also: Grandstream Analog Gateways and ATAs

See also: FreePBX with Analog Telephony Adapters

If you use a SIP trunk provider that requires 10 digits, modify the Dialplan in the Line1 (or Line2) settings by inserting <:520> to the 7-digit section:

|<:520>[2-9]xxxxxx|

In this example, we need 520 (our local area code) added to dial 7-digit calls.

(*xx|[3469]11|0|00|<:520>[2-9]xxxxxx|1xxx[2-9]xxxxxxS0|xxxxxxxxxxxx.)

For maximum bandwidth savings, use g.729a. Otherwise, choose (the default) g.711u (uncompressed) for best audio quality. It's roughly 24Kbps vs. 92Kbps.

Also, be sure to set the RTP Packet Size to 0.020 on the SIP tab.

In our limited experience, paging amplifiers are usually connected to an FXO port of a PBX. The SPA3102 includes an FXO port.

http://wiki.freepbx.org/display/FOP/Using+an+SPA3102+FXO+Port+to+connect+with+Valcom+Paging+units

Normally, the web interface of the SPA3102 is only available on the LAN interface of the unit, even though the units are usually completely behind another firewall.

Since the WAN interface is used to connect to the SIP trunk provider, the default settings will leave the SPA3102 in an un-managable state…you would have to connect a portable PC to the LAN interface to administer the unit.

These steps will enable the web interface on the WAN port:

1. Plug in an analog phone or 'butt set' into the Phone port
2. Dial (four asterisks) for the (audible) main menu
3. Dial 110# for the IP submenu
4. Dial 7932# then
5. Dial 1# to confirm