Allow Auto Answer by

 

If the Call-Info header contains answer-after=0, the call be answered automatically

 

 

 

 

Call-Info

 

(so called paging mode).

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Refer-To Use Target

 

Default is “No”. If set to “Yes”, then for Attended Transfer, the “Refer-To” header

 

 

 

 

 

Contact

 

uses the transferred target’s Contact header information.

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Transfer on Conference

 

Defines whether or not the call is transferred to the other party if the initiator of the

 

 

 

 

 

Hangup

 

conference hangs up.

 

 

 

 

 

 

Default setting is set to “No”.

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Preferred Vocoder

 

GXP1400/1405 supports up to 7 different Vocoder types including G.711(a/µ) (also

 

 

 

 

 

 

 

known as PCMU/PCMA), G.723.1, G.729A/B, G.726-32, Ilbc, G.722 (wide-band).

 

 

 

 

Configure Vocoders in a preference list that is included with the same preference

 

 

 

 

order in SDP message. Enter the first Vocoder in this list by choosing the

 

 

 

 

appropriate option in “Choice 1”. Similarly, enter the last Vocoder in this list by

 

 

 

 

choosing the appropriate option in “Choice 8”.

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

SRTP Mode

 

Enable SRTP mode based on selection. Default is “No”.

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Symmetric RTP

 

Selects whether or not symmetric RTP is supported.

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Silence Suppression

 

This controls the silence suppression/VAD feature of the audio codec G.723 and

 

 

 

 

 

 

 

G.729. If set to “Yes”, when silence is detected, a small quantity of VAD packets

 

 

 

 

(instead of audio packets) will be sent during the period of no talking. If set to “No”,

 

 

 

 

this feature is disabled.

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Voice Frames per TX

 

This field contains the number of voice frames to be transmitted in a single Ethernet

 

 

 

 

 

 

 

packet (be advised the IS limit is based on the maximum size of Ethernet packet is

 

 

 

 

1500 byte (or 120kbps)).

 

 

 

 

 

 

When setting this value, be aware of the requested packet time (ptime, used in SDP

 

 

 

 

message) is a result of configuring this parameter. This parameter is associated

 

 

 

 

with the first codec in the above codec Preference List or the actual used payload

 

 

 

 

type negotiated between the 2 conversation parties at run time. E.g., if the first

 

 

 

 

codec is configured as G.723 and the “Voice Frames per TX” is set to 2, then the

 

 

 

 

“ptime” value in the SDP message of an INVITE request will be 60ms because each

 

 

 

 

G.723 voice frame contains 30ms of audio. Similarly, if this field is set to 2 and the

 

 

 

 

first codec is G.729 or G.711 or G.726, then the “ptime” value in the SDP message

 

 

 

 

of an INVITE request will be 20ms.

 

 

 

 

 

 

If the configured voice frames per TX exceeds the maximum allowed value, the IP

 

 

 

 

phone will use and save the maximum allowed value for the corresponding first

 

 

 

 

codec choice. The maximum value for PCM is 10 (x10ms) frames; for G.726, it is 20

 

 

 

 

(x10ms) frames; for G.723, it is 32 (x30ms) frames; for G.729/G.728, 64 (x10ms)

 

 

 

 

and 64 (x2.5ms) frames respectively.

 

 

 

 

 

 

Please be careful when editing these parameters. Adjusting these parameters will

 

 

 

 

also change the dynamic jitter buffer. The GXP1400/1405 has a patent dynamic

 

 

 

 

jitter buffer handling algorithm. The jitter buffer range is 20 ~ 200 ms.

 

 

 

 

We recommend using the default settings provided. We do not recommend

 

 

 

 

adjusting these parameters if you are an average user. Incorrect settings will affect

 

 

 

 

the voice quality.

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Grandstream Networks, Inc.

 

GXP1400/1405 User Manual

Page 32 of 36

 

 

 

 

Firmware version: 1.0.1.83

Last Updated: 08/2011

 

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Grandstream Networks GXP1405 Allow Auto Answer by, Call-Info, Refer-To Use Target, Contact, Transfer on Conference, Hangup
Page 32 Page 34

GXP1405, GXP1400 specifications

Grandstream Networks is a renowned provider of communication solutions, offering a wide range of innovative products for the VoIP market. Among their popular offerings are the GXP1400 and GXP1405 IP phones, designed specifically for users seeking affordable and reliable communication tools without compromising on quality.

The GXP1400 is an entry-level IP phone that boasts a sleek design and robust functionality. It features a 128x40 pixel LCD display, providing users with clear visibility for dialing, call management, and access to important information. Equipped with two lines, the GXP1400 allows users to manage multiple calls efficiently, making it suitable for small businesses or home office environments.

On the other hand, the GXP1405 is an enhanced version of the GXP1400, offering additional features for the same targeted market. The GXP1405 provides up to four lines, which is ideal for users who require more versatility in their calling options. Additionally, this model comes with a larger LCD screen with the same resolution, offering an extended view for enhanced usability.

Both models support advanced telephony technologies, including SIP (Session Initiation Protocol), enabling seamless connectivity with various VoIP services. They are compatible with a wide range of SIP-based services, ensuring that users can easily integrate them into their existing phone systems. Furthermore, the GXP1400 and GXP1405 support HD audio for crystal-clear voice quality, improving the overall communication experience.

In terms of features, both models include a built-in speakerphone, which allows hands-free calling, and programmable DSS keys for quick access to frequently dialed numbers. They also come with features like call hold, call transfer, and three-way conferencing, making them suitable for dynamic office environments.

Security is a priority for Grandstream, and both the GXP1400 and GXP1405 include encryption protocols to protect users' communications, ensuring privacy and data integrity.

Overall, the Grandstream Networks GXP1400 and GXP1405 are exceptional choices for users looking for cost-effective IP phones that offer essential features and reliable performance. Their combination of user-friendly functionality, advanced SIP support, HD audio quality, and robust security makes them an excellent addition to any office setup.
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