Table 11: Fxo Port Settings - Grandstream Networks HT503 User Manual

Fax Mode
Fax Tone Detection
Mode
Jitter Buffer Type
Jitter Buffer Length
SRTP Mode
SLIC Setting
Called ID Scheme
Caller ID TX Level (dB)
Polarity Reversal
Loop Current Disconnect
Loop Current Disconnect
Duration
Hook Flash Timing
On Hook Timing
Gain
Ring Tones
T 11: FXO PORT S
ABLE
Account Active
SIP Server
Failover SIP Server
Outbound Proxy
SIP Transport
NAT Traversal (STUN)
Grandstream Networks, Inc.
T.38 (Auto Detect) FoIP by default, or fax Pass-Through (must use PCMU/PCMA)
Default is Callee. This decides whether Caller or Callee sends out the re-invite for T.38
or Fax Pass-Through.
Select either Fixed or Adaptive based on network conditions.
Select Low, Medium, or High based on network conditions.
Secure RTP protocol used for media transmission over VoIP. Disabled by default.
Other modes are: enabled but not forced & enabled and forced.
Dependent on standard phone type (and location).
Bellcore/Telcordia, ETSI-FSK, ETSI-DTMF, SIN 227 – BT, & NTT Japan
A value of level for Caller ID information sent by a FXS port to phone connected to it.
(-40 – 0dB. Default -20dB)
If set to "Yes", polarity will be reversed upon call establishment and termination.
Default is No.
Set it to "Yes" of the traditional PBX you are using with HT503 uses this method for
signaling call termination. Default is No.
A configurable period of time in which the FXS port will drop off voltage on the line to
indicate to the local party that the call is disconnected from the remote side.
(100-10000 ms. Default 200 ms)
The time period when the cradle is pressed (Hook Flash) to simulate a FLASH. Adjust
this time value to prevent unwanted activation of the Flash/Hold and automatic phone
ring-back.
On-hook timing is the minimum time for an on-hook event to be validated.
Voice path volume adjustment.
Rx is a gain level for signals transmitted by FXS
•
Tx is a gain level for signals received by FXS.
•
Default = 0dB for both parameters. Loudest volume: +6dB Lowest volume: -6dB.
User can adjust volume of call on either end using the Rx Gain Level parameter and
the Tx Gain Level parameter located on the FXS Port Configuration page.
If call volume is too low when using the FXS port (ie. the ATA is at user site), adjust
volume using the Rx Gain Level parameter under the FXS Port Configuration page.
If voice volume is too low at the other end, user may increase the far end volume using
the Tx Gain Level parameter under the FXS Port Configuration page.
This function lets you configure ring or tone frequencies according to preference. By
default tones are set to North American frequencies. Frequencies should be
configured with known values to avoid high pitch sounds.
ETTINGS
When set to "Yes" the FXO port is activated.
SIP Server's IP address or Domain name provided by VoIP Service Provider.
This Field contains the URL or the IP address of a second SIP server, this one will be
used in case the device looses the connection with the first server.
IP address or Domain name of Outbound Proxy, or Media Gateway, or Session Border
Controller. Used by HT503 for firewall or NAT penetration in different network
environments. If symmetric NAT is detected, STUN will not work and ONLY way to
correct the problem is to use the outbound proxy.
User can select UDP, TCP or TLS
This parameter defines whether or not the HT503 NAT traversal mechanism is
activated. If set to "Yes" with a STUN server also specified, the HT503 will perform
according to the STUN client specification. Using this mode, the embedded STUN
client will detect if and what type of firewall/NAT is being used.
HT503 User Manual
Firmware 1.0.1.57
Page 28 of 37
Last Updated: 3/2010