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Grandstream Networks, Inc. HT-502 User Manual Page 26 of 35
Firmware 1.0.0.39 Last Updated: 03/2007
d. [147] - any digit 1, 4, or 7;
e. <2=011> - replace digit 2 with 011 when dialing
• Example 1: {[369]11 | 1617xxxxxxx} –
Allow 311, 611, 911, and any 10 digit numbers of leading digits 1617
• Example 2: {^1900x+ | <=1617>xxxxxxx} –
Block any number of leading digits 1900 and add prefix 1617 for any
dialed 7 digit numbers
• Example 3: {1xxx[2-9]xxxxxx | <2=011>x+} –
Allow any length of number with leading digit 2 and 10 digit-numbers of
leading digit 1 and leading exchange number between 2 and 9; If leading
digit is 2, replace leading digit 2 with 011 before dialing
3. Default: Outgoing - {x+}
Subscribe for MWI
Default is No. When set to “Yes” a SUBSCRIBE for Message Waiting
Indication will be sent periodically.
Send Anonymous
If this parameter is set to “Yes”, the “From” header along with Privacy and P_
Asserted_Identity headers in outgoing INVITE message will be set to
anonymous, blocking Caller ID.
Anonymous Call
Rejection
Default is No. If set to Yes, incoming calls with anonymous Caller ID will be
rejected with 486 Busy message.
Special Feature
Default is Standard. Choose the selection to meet some special requirements
from Softswitch vendors.
Preferred Vocoder
The HT-502 supports up to 5 different Vocoder types including G.711 A-/U-
law, G.726 (Supports bit rates 16, 24, 32 and 40), G.723.1, G.729A/B/E and
iLBC. The user can configure Vocoders in a preference list that will be
included with the same preference order in SDP message. The first Vocoder
is entered by choosing the appropriate option in “Choice 1”. The last Vocoder
is entered by choosing the appropriate option in “Choice 8”.
G723 Rate
Defines the encoding rate for G.723 vocoder. By default, 6.3kbps rate is
chosen.
iLBC Frame Size
Sets the iLBC frame size in 20ms or 30ms
iLBC Payload type
Defines payload type for iLBC. Default value is 97. The valid range is between
96 and 127.
G726-16 Payload
type
Default value is 98. Range is from 96 to 127.
G726 - 24 Payload
type
Default value is 99. Range is from 96 to 127.
G726 - 32 Payload
type
Default value is 100. Range is from 96 to 127.
G726 - 40 Payload
type
Default value is 103. Range is from 96 to 127.
G729E payload type
Default value is 102. Range is from 96 to 127.
VAD
Default is No. VAD allows detecting the absence of audio and conserve
bandwidth by preventing the transmission of "silent packets" over the network.
Symmetric RTP
Default is No. When set to Yes the device will change the destination to send
RTP packets to the source IP address and port of the inbound RTP packet last
received by the device.
Fax Mode
T.38 (Auto Detect) FoIP by default, or Pass-Through (must use codec
PCMU/PCMA)
Fax Tone Detection
Default is Callee. This decides whether Caller or Callee sends out the re-