Pstn Pass Through; Voip-To-Pstn Calls - Grandstream Networks HT503 User Manual

Assume that parties A and
way conference:
1. A presses FLASH (on the analog phone, or Hook Flash for old model phones) to get a dial
tone.
dials C's number then # (or wait for 4 seconds).
2. A
3. If C answers the call, then
4. If C does not answer the call,
5. If A presses FLASH during the conference, C will be dropped out.
6. If A hangs up, the conference will be terminated for all three parties when configuration
"Transfer on Conference Hangup" is set to "No". If the configuration is set to "Yes",
transfer B to C so that B and C can continue the conversation.

PSTN PASS THROUGH

HT503 supports PSTN pass through using the FXS port. The user can place and receive PSTN calls
using analog phone connected to FXS port.

To receive PSTN calls, pick up the phone when it rings;

To complete a PSTN call, press the PSTN access code (*00 is default, or any number configured
in the web configuration) to switch to the PSTN line, listen for a dial tone, then dial the number.

If the 503 loses power or lost registration with SIP server, device will switch to mode when PSTN
line will be transparently connected directly to phone connected to FXS port. It will function as a
jack, enabling a direct connection to the PSTN Line.

VOIP-TO-PSTN CALLS

This function is available using the FXO port. The FXO port functions as a bridge between the Internet
and PSTN. The user can remotely use a PSTN line to initiate a call.
T M V IP- -PSTN C
O AKE A O TO
1. Dial the FXO SIP account phone number to establish the VoIP session. The caller will hear the
ring back tone once. Then the caller hears either a special continuous tone or a dial tone. The
special continuous tone is played if the pin code is configured, otherwise, the caller will hear a dial
tone.
2. Enter the PIN code (if configured under the BASIC configuration page). The caller will hear a dial
tone and be connected to the PSTN line if the PIN code is valid. If the PIN code is invalid, the
continuous tone is played to prompt caller to enter the PIN code again. The user may try up to 3
times to enter a correct PIN code. After three (3) tries, the HT503 hangs up.
3. After the caller hears a dial tone from PSTN line, the caller can place the next call.
4. The user can hit the # key to identify the end of the pin code or wait 4 seconds for a new dial tone
and then dialing the PSTN number.
FIRMWARE VERSION 1.0.6.8
B are in conversation. Party
A presses FLASH to bring B, C in the conference.
A can press FLASH back to talk to
:
ALL
HT503 USER MANUAL
A (using the HT503) wants to bring C into a 3-
B.
A will
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