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Page 136 / 186 Scroll up to view Page 131 - 135
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Linksys IP Phone Administrator Guide
Document Version 3.2
Chapter 5
Linksys ATA Field Reference
PSTN Line Tab
SIP Debug Option
SIP messages are received at or sent from the proxy listen port. This feature controls
which SIP messages to log. Choices are as follows:
•
none—No logging.
•
1-line—Logs the start-line only for all messages.
•
1-line excl. OPT—Logs the start-line only for all messages except OPTIONS
requests/responses.
•
1-line excl. NTFY—Logs the start-line only for all messages except NOTIFY
requests/responses.
•
1-line excl. REG—Logs the start-line only for all messages except REGISTER
requests/responses.
•
1-line excl. OPT|NTFY|REG—Logs the start-line only for all messages except
OPTIONS, NOTIFY, and REGISTER
±
requests/responses.
•
full—Logs all SIP messages in full text.
•
full excl. OPT—Logs all SIP messages in full text except OPTIONS
requests/responses.
•
full excl. NTFY—Logs all SIP messages in full text except NOTIFY
requests/responses.
•
full excl. REG—Logs all SIP messages in full text except REGISTER
requests/responses.
•
full excl. OPT|NTFY|REG—Logs all SIP messages in full text except for OPTIONS,
NOTIFY, and REGISTER requests/responses.
The default is none.
RTP Log Intvl
The interval for the RTP log.
Restrict Source IP
If Lines 1 and 2 use the same SIP Port value and the Restrict Source IP feature is enabled,
the proxy IP address for Lines 1 and 2 is treated as an acceptable IP address for both lines.
To enable the Restrict Source IP feature, select yes. Otherwise, select no.
If configured,
the PAP2T will drop all packets sent to its SIP Ports originated from an
untrusted IP address. A source IP address is untrusted if it does not match any
of the IP addresses resolved from the configured <Proxy> (or <Outbound
Proxy> if <Use Outbound Proxy> is
yes
).
The default is no.
Referor Bye Delay
Controls when the Linksys IP phone sends BYE to terminate stale call legs upon
completion of call transfers. Multiple delay settings (Referor, Refer Target, Referee, and
Refer-To Target) are configured on this screen. For the Referor Bye Delay, enter the
appropriate period of time in seconds.
The default is 4.
Refer Target Bye Delay
For the Refer Target Bye Delay, enter the appropriate period of time in seconds.
The default is 0.
Referee Bye Delay
For the Referee Bye Delay, enter the appropriate period of time in seconds.
The default is 0.
Page 137 / 186
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Linksys IP Phone Administrator Guide
Document Version 3.2
Chapter 5
Linksys ATA Field Reference
PSTN Line Tab
Proxy and Registration (SPA3102/AG310)
Refer-To Target Contact
To contact the refer-to target, select yes. Otherwise, select no.
The default is no.
Sticky 183
If this feature is enabled, the IP telephony ignores further 180 SIP responses after
receiving the first 183 SIP response for an outbound INVITE. To enable this feature,
select yes. Otherwise, select no.
The default is no.
Field
Description
Proxy
SIP proxy server for all outbound requests.
Use Outbound Proxy
Enable the use of <Outbound Proxy>. If set to no, <Outbound Proxy> and <Use OB Proxy
in Dialog) is ignored.
The default is no.
Outbound Proxy
SIP Outbound Proxy Server where all outbound requests are sent as the first hop.
Use OB Proxy In Dialog
Whether to force SIP requests to be sent to the outbound proxy within a dialog. Ignored
if <Use Outbound Proxy> is no or <Outbound Proxy> is empty.
The default is yes.
Register
Enable periodic registration with the <Proxy>. This parameter is ignored if <Proxy> is not
specified.
The default is yes.
Make Call Without Reg
Allow making outbound calls without successful (dynamic) registration by the unit. If No,
dial tone will not play unless registration is successful.
The default is no.
Register Expires
Allow answering inbound calls without successful (dynamic) registration by the unit. If
proxy responded to REGISTER with a smaller Expires value, the PAP2T will renew
registration based on this smaller value instead of the configured value. If registration
failed with an Expires too brief error response, the PAP2T will retry with the value given
in the Min-Expires header in the error response.
The default is 3600.
Ans Call Without Reg
E
xpires value in sec in a REGISTER request. PAP2T will periodically renew registration
shortly before the current registration expired. This parameter is ignored if <Register> is
no. Range: 0 – (231 – 1) sec
Use DNS SRV
Whether to use DNS SRV lookup for Proxy and Outbound Proxy.
The default is no.
DNS SRV Auto Prefix
If enabled, the PAP2T will automatically prepend the Proxy or Outbound Proxy name with
_sip._udp when performing a DNS SRV lookup on that name.
The default is no.
Page 138 / 186
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Linksys IP Phone Administrator Guide
Document Version 3.2
Chapter 5
Linksys ATA Field Reference
PSTN Line Tab
Subscriber Information (SPA3102/AG310)
Proxy Fallback Intvl
This parameter sets the delay (sec) after which the PAP2T will retry from the highest
priority proxy (or outbound proxy) servers after it has failed over to a lower priority
server. This parameter is useful only if the primary and backup proxy server list is
provided to the PAP2T via DNS SRV record lookup on the server name. (Using multiple
DNS A record per server name does not allow the notion of priority and so all hosts will
be considered at the same priority and the PAP2T will not attempt to fall back after a fail
over).
The default is 3600
Proxy Redundancy Method
PAP2T will make an internal list of proxies returned in DNS SRV records. In normal mode
this list will contain proxies ranked by weight and priority.
if Based on SRV port is configured the PAP2T does normal first, and also inspect the port
number based on 1
st
proxy’s port on the list.
The default is Normal.
Field
Description
Field
Description
Display Name
Display name for caller ID.
User ID
Extension number for this line.
Password
Password for this line.
Use Auth ID
To use the authentication ID and password for SIP authentication, select yes. Otherwise,
select no to use the user ID and password.
The default is no.
Auth ID
Authentication ID for SIP authentication.
Call Capacity
Maximum number of calls allowed on this line interface. Choices: {unlimited,1,2,3,…25
}. Default is 16. Note that the Linksys IP phone does not distinguish between incoming
and outgoing calls when talking about call capacity. Note: unlimited = 16
Mini Certificate
Base64 encoded of Mini-Certificate concatenated with the 1024-bit public key of the CA
signing the MC of all subscribers in the group.
The default is empty.
SRTP Private Key
Base64 encoded of the 512-bit private key per subscriber for establishment of a secure
call.
The default is empty.
Page 139 / 186
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Linksys IP Phone Administrator Guide
Document Version 3.2
Chapter 5
Linksys ATA Field Reference
PSTN Line Tab
Audio Configuration (SPA3102/AG310)
A codec resource is considered as allocated if it has been included in the SDP codec list of an active call,
even though it eventually may not be the one chosen for the connection. So, if the G.729a codec is
enabled and included in the codec list, that resource is tied up until the end of the call whether or not the
call actually uses G.729a. If the G729a resource is already allocated and since only one G.729a resource
is allowed per device, no other low-bit-rate codec may be allocated for subsequent calls; the only choices
are G711a and G711u. On the other hand, two G.723.1/G.726 resources are available per device.
Therefore it is important to disable the use of G.729a in order to guarantee the support of two
simultaneous G.723/G.726 codec.
Field
Description
Preferred Codec
Preferred codec for all calls. (The actual codec used in a call still depends on the outcome
of the codec negotiation protocol.) Select one of the following: G711u, G711a, G726-16,
G726-24, G726-32, G726-40, G729a, or G723.
The default is G711u.
Silence Supp Enable
To enable silence suppression so that silent audio frames are not transmitted, select yes.
Otherwise, select no.
The default is no.
Use Pref Codec Only
To use only the preferred codec for all calls, select yes. (The call fails if the far end does
not support this codec.) Otherwise, select no.
The default is no.
Silence Threshold
Select the appropriate setting for the threshold: high, medium, or low.
The default is medium.
G729a Enable
To enable the use of the G729a codec at 8 kbps, select yes. Otherwise, select no.
The default is
yes.
Echo Canc Enable
To enable the use of the echo canceller, select yes. Otherwise, select no.
The
default
is
yes.
G723 Enable
To enable the use of the G723a codec at 6.3 kbps, select yes. Otherwise, select no.
The
default
is
yes.
Echo Canc Adapt Enable
To enable the echo canceller to adapt, select yes. Otherwise, select no.
The
default
is
yes.
G726-16 Enable
To enable the use of the G726 codec at 16 kbps, select yes. Otherwise, select no.
The
default
is
yes.
Echo Supp Enable
To enable the use of the echo suppressor, select yes. Otherwise, select no.
The
default
is
yes.
G726-24 Enable
To enable the use of the G726 codec at 24 kbps, select yes. Otherwise, select no.
The
default
is
yes.
Page 140 / 186
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Linksys IP Phone Administrator Guide
Document Version 3.2
Chapter 5
Linksys ATA Field Reference
PSTN Line Tab
FAX CED Detect Enable
To enable detection of the fax Caller-Entered Digits (CED) tone, select yes. Otherwise,
select no.
The
default
is
yes.
G726-32 Enable
To enable the use of the G726 codec at 32 kbps, select yes. Otherwise, select no.
The
default
is
yes.
FAX CNG Detect Enable
To enable detection of the fax Calling Tone (CNG), select yes. Otherwise, select no.
The
default
is
yes.
G726-40 Enable
To enable the use of the G726 codec at 40 kbps, select yes. Otherwise, select no.
The
default
is
yes.
FAX Passthru Codec
Select the codec for fax passthrough, G711u or G711a.
The default is G711u.
DTMF Process INFO
(Not in PAP2T) To use the DTMF process info feature, select yes. Otherwise, select no.
The
default
is
yes.
FAX Codec Symmetric
To force the Linksys IP phone to use a symmetric codec during fax passthrough, select
yes. Otherwise, select no.
The
default
is
yes.
DTMF Process AVT
(Not in PAP2T) To use the DTMF process AVT feature, select yes. Otherwise, select no.
The
default
is
yes.
FAX Passthru Method
Select the fax passthrough method: None, NSE, or ReINVITE.
The default is NSE.
DTMF Tx Method
Select the method to transmit DTMF signals to the far end: InBand, AVT, INFO, Auto,
InBand+INFO, or AVT+INFO. InBand sends DTMF using the audio path. AVT sends
DTMF as AVT events. INFO uses the SIP INFO method. Auto uses InBand or AVT based
on the outcome of codec negotiation.
The default is Auto.
FAX Process NSE
To use the fax process NSE feature, select yes. Otherwise, select no.
The
default
is
yes.
Hook Flash Tx Method
Select the method for signaling hook flash events:
None
,
AVT
, or
INFO
. None does not
signal hook flash events. AVT uses RFC2833 AVT (event = 16). INFO uses SIP INFO
with the single line signal=hf in the message body. The MIME type for this message body
is taken from the Hook Flash MIME Type setting.
The default is None.
FAX Disable ECAN
If enabled, this feature automatically disables the echo canceller when a fax tone is
detected. To use this feature, select yes. Otherwise, select no.
The default is no.

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