Linksys PAP2/SPA3000/SPA3102

◆ 在 SPA3000 的設定

設定之前先將所有設定回復成出廠設定，且必須以 Admin 登入及選擇 Advanced 模式。建議在設定完成後務必在正式啟用前先設定管理者的密碼。

1. 檢查 RTP Packet Size

SIP->RTP Parameters
RTP Packet Size = 0.020 

2. 設定 PSTN Line

PSTN Line->
SIP Settings
SIP Port = 5061

Proxy and Registration
Proxy = 你的 Asterisk box 的 IP
Make Call Without Reg = Yes
Ans Call Without Reg = Yes
Register Expires = 300

Subscriber Information
Display Name = PSTN Call
User ID = pstn-1  (這必須與 Asterisk 的 Trunk - username 相同)
Password = yourpass  (同上, 必須與 Trunk 相同)

Audio Configuration
Preferred Codec = G711u
DTMF Process INFO = Yes
DTMF Process AVT = Yes
DTMF Tx Method = Auto

Dial Plans
Dial Plan 2 = (S0<:123456789>)  ;取代 1234567890 為實際的 PSTN 號碼,且必須與 Asterisk 的 Inbound Route 的 DID 號碼相同.

VoIP-To-PSTN Gateway Setup
VoIP-To-PSTN Gateway Enable = yes
VoIP Caller Auth Method = None
VoIP PIN Max Retry = 3 ; I did not change this.
One Stage Dialing = Yes ; very important
Line 1 VoIP Caller DP = none
VoIP Caller Default DP = none
Line 1 Fallback DP = none

VoIP Users and Passwords(HTTP Authentication)
保留所有原本的空白及下拉選單的 1

PSTN-To-VoIP Gateway Setup
PSTN-To-VoIP Gateway Enable = Yes
PSTN Caller Auth Method = none
PSTN Ring Thru Line 1 = no ; I use Asterisk for my routing.
PSTN Pin Max Retry = 3
PSTN CID for VoIP CID = Yes  ;if you subscribe to CallerID service on your PSTN line, otherwise No
PSTN CID Number Prefix = (Leave Blank)
PSTN Caller Default DP = 2 ; important - here is where it sends the calls to.
Off Hook While Calling VoIP = No
Line 1 Signal Hook Flash To PSTN = Disabled
PSTN CID Name Prefix = (Leave Blank)

FXO Timer Values(sec)
Voip Answer Delay = 0
PSTN Answer Delay = 3

PSTN Disconnect Detection
不用作任何改變

International Control
SPA To PSTN Gain = 3
PSTN To SPA Gain = 12
當使用分機撥打 PSTN 時，若聽到對方的聲音太小，可以調整 PSTN to SPA Gain，反之，當對方聽你聲音太小時，調整 SPA to PSTN Gain。這兩項增益值都不宜調整過大，否則會產生回音(Echo)。