What picture file format are supported by the GXV3140?
The GXV3140 supports almost all the main picture format types: jpg, gif and png. If the picture is too big, it will be resized proportionally. You can see the proportion on the upper right-hand corner of the LCD screen.
What RJ9 headset, EHS headset and Bluetooth headset are compatible with GXV3240/GXV3275?
Please refer to the link HERE for a list of compatible headsets on the GXV3240/GXV3275.
Note: There are other more models or Bluetooth headsets working with GXV3240/GXV3275. Please contact us should you have any questions or information.
What SD card format and maximum storage size can be supported on UCM6100/UCM6510?
UCM6100/UCM6510 support SD, SDHC and SDXC for the SD card format. The maximum storage size supported is depending on the file system format on the SD card. Currently UCM6100/UCM6510 support SD card file system format FAT32, NTFS, EXT2, EXT3 and EXT4.
What should I do if I encounter port hang after a few calls?
Generally, port hang is caused by inability to detect the disconnect signal from the side that hangs up first; usually it is when the PSTN side hangs up first. Follow these steps to fix this problem: - Call your PSTN carrier and ask what kind of PSTN disconnect signal is used − power disconnect (or current disconnect) or tone disconnect. - If it is power disconnect (common in most developed countries), ask for the duration of power loss as a disconnect signal. - If tone disconnect is used, ask for the disconnect tone frequency and cadence, as well as AC Termination impedance. - Re-configure the GXW410x to reflect the disconnect signal used by the PSTN carrier. - Power Disconnect: navigate to FXO Lines in the web configuration pages and set Enable Current Disconnect to “Yes”. Make sure the correct duration of power loss is set in Current Disconnect Threshold. Set Enable Tone Disconnect to “No”. - Tone Disconnect: navigate to FXO Lines in the web configuration pages and set Enable Current Disconnect to “No”. Re-configure the AC Termination Impedance and the disconnect tone frequency and cadence (usually Reorder Tone or Busy Tone under - Channels in the web configuration pages) to match your PSTN provider. Reboot the GXW and place some test calls. If the port hang issue is not fixed, contact Grandstream Technical Support.
What text format does GXP2200 support?
GXP2200 supports text format in html, txt and others with 3rd party plug-in.
What USB stereo audio adapters are compatible with the GVC320x?
The following USB stereo audio adapters are compatible via GVC320x's USB speaker port (listed as SPKR on the GVC320x device):
Syba SD-CM-UAUD USB Stereo Audio Adapter
Sabrent USB External Stereo Sound Adapter: AU-MMSA
Sabrent Aluminum USB External Stereo Sound Adapter: AU-EMAC
Plugable USB Audio Adapter with 3.5mm Speaker/Headphone and Microphone Jacks
HandAcc Aluminum USB External 3.5mm Stereo Audio Adapter
IT-CEO Y2AV-4 USB Stereo Audio Adapter
Vention VAB-S09 USB 2.0 External Sound Card Adapter
What video resolutions does the GVC3200/GVC3202 support?
1080p, 720p, VGA, 4SIF and 4CIF, up to 30fps. Variable Frame Rate is also supported.
What video, audio, image formats does GXP2200 support?
Video: MP4 (up to 720P), H.264, RV, VP6, VP8, H.263. Image: JPG, GIF, PNG, BMP. Audio: AAC, MP3, OGG, M4A, AMR, WAVE, MIDI, Vorbis.
What VPN protocols does GXP2200 support?
PPTP L2TP L2TP/IPSec PSK L2TP/IPSec CRT
What's the Android version on GXP2200?
GXP2200 is currently using Android version 2.3.5.
What's the Android version on GXV3240/GXV3275?
GXV3240/GXV3275 is currently using Android version 4.2.2.
What's the capacity of SD Card/USB Flash Drive supported on GXP2200?
32G SD card and 32G USB Flash Drive are supported/tested compatible on GXP2200.
What's the maximum call recording storage time on the UCM6100 series?
The maximum call recording storage time is approximately 40 hours in the UCM6100 series internal memory. The call recording file is saved in wav format in the UCM6100 series . Normally a 1-hour call recording is about 55M. Since the UCM6100 series internal memory storage is about 2.2G, this means theoretically the maximum call recording storage time is 2200M / 55M = 40 hours.
What's the maximum Fax mail storage size on the UCM6100 series internal memory?
The maximum Fax mail storage size is approximately 30000 pages in the UCM6100 series internal memory. The Fax mail (VFax) is saved as both tiff and pdf format in the UCM6100 series . The size of each Fax mail page is about 0.1M. Since the UCM6100 series internal memory storage is 3G, this means theoretically the maximum Fax mail storage size is 3000M / 0.1M = 30000 pages.
What's the maximum number of contacts that can be added to the UCM LDAP server?
It is recommended to store up to 3000 contacts in the UCM LDAP server. The UCM Web UI performance might be affected if there are more than 3000 contacts. Additionally, the UCM will return up to 3000 contacts per LDAP server query.
What's the maximum number of voice menu supported on the UCM6100 series IVR? Do we have any limitation on how many levels we could have?
There is no limit on the number of IVRs that can be created. But the maximum level of the IVR voice menu is 5 levels.
What's the maximum voicemail storage time on the UCM6100 series internal memory?
The maximum voicemail storage time is approximately 30000 minutes in the UCM6100 series internal memory. The voicemail is saved in wav format in the UCM6100 series . Normally a 5-minute voicemail is about 0.5M in wav file. Since the UCM6100 series internal memory storage is 3G, this means theoretically the maximum voicemail storage time is (3000M / 0.5M) * 5 minutes = 30000 minutes.
What's the memory/flash on GXP2200?
GXP2200 uses 512MB DDR2 RAM. The memory available for Android system is less than that due to Linux kernel and driver memory usage, etc. GXP2200 uses 4GB eMMC NAND Flash for internal storage. The internal storage available for users is about 3GB.
What's the purpose of GS Market? Why is it still needed?
GS Market is for users to download and install apps which are developed by Grandstream or 3rd party developers and certified to work on GXP2200 by Grandstream. The apps specifically for GXP2200 are maintained and updated in GS Market.
What's the purpose of GS Market? Why it still needed?
GS Market is for users to download and install apps which are developed by Grandstream or 3rd party developers and certified to work on GXV3240/GXV3275 by Grandstream. The apps specifically for GXV3240/GXV3275 are maintained and updated in GS Market.
What’s the Bluetooth stack and version used on the GXV3240/GXV3275?
Bluedroid stack. The version is Android 4.2 official Bluetooth version.
What’s the difference between one-stage dialing and two-stage dialing?
One stage dialing means the end user hears a dial tone immediately and can place a call. Two-stage dialing means the end user has to dial twice - once to reach a second dial tone, and again to reach the final destination. In other words, a call traversing from PSTN to VoIP or VoIP to PSTN must go through two dialing stages to reach the intended recipient. For example, a VoIP user will complete the first stage by calling a pre-programmed number (on the GXW410x) and receive the PSTN dial tone in return. The user will then complete the second stage by dialing a PSTN number. The reverse happens for PSTN to VoIP calls. If one-stage dialing is used, a call from either the VoIP or PSTN side will pass through the gateway to the intended recipient. With one-stage dialing, a PSTN number dialed by a VoIP user will reach the GXW410x, and the GXW410x will immediately dial the call on the PSTN side. For PSTN to VoIP, an incoming PSTN caller will be directly connected with a VoIP extension. One-stage dialing offers convenient and streamlined dialing, while two-stage dialing offers flexibility and complete access to the VoIP network.
When a call comes in, I am not able to hear the audio or see the video. Why?
Normally, this situation would occur when your phone is connected to the Internet through a router. The phone and the other peripherals on the local network shares the same public IP address, therefore the packets may not be routed to the correct device. Generally speaking, the GXV3140 solves this problem by integrating this with the IPVideoTalk server for automatic NAT detection and NAT traversal. However, if this problem still occurs, please check the following: (1) Log into the web configuration interface of the GXV3140. Under [Advanced Settings], configure the “STUN Server” to a fully functional STUN server. The default STUN server used is “stun.ipvideotalk.com”. (2) Select the corresponding [Account] page and under [Network settings], configure the [NAT Traversal] to AUTO. Save and reboot the phone for changes to take place. (3) If the “AUTO” NAT detection does not work, please change the [NAT Traversal] to STUN. Save and reboot the phone for changes to take place. The above settings are applicable to other servers other than IPVideoTalk. However, if the detected NAT type is symmetrical Nat, please enable the UPNP function on the router.
When establishing VPN connection using PPTP, why does my GXP2200 show connection failed?
When establishing VPN connection using PPTP, please make sure "Enable encryption" is selected. If not, peer negotiation might fail.
When GAC2500 is connected to a PC playing music, why there is no sound from GAC?
Please open the sound control settings from PC and choose GAC2500 as the default speaker.
1. Right click Sound icon, and check “Sound”.
2. Choose “Playback” tag. Right click on GAC2500 speaker and choose “Set as Default Devices”.
3. After configuring, the setting is shown as below. And GAC2500 will play sounds.
When GAC2500 is connected to a PC via USB cable, would PC access the files in GAC?
No. When connected to a PC, GAC2500 act as an audio device only.
When I have two SIP trunks registered to the same provider, the incoming calls to both trunks are always received from the first trunk. Why?
If this issue happens to your UCM6100, please check your inbound route configuration and make sure the DID pattern is unique for the inbound route assigned to each of those two trunks. Once the inbound route has unique DID pattern configured, the issue should be resolved. This is because the calls from both trunks have the same IP/port. In the cases when "To header/Request line" doesn't always have the extension that the UCM6100 is registered to, we will need different inbound route DID pattern to differentiate them.
When I use Skype, Pandora, Youtube or other 3rd party apps, the default dialer always pops up with dial tone if I pick up the handset. How can I disable the default dialer when those 3rd party apps are being used?
On the GXP2200 top status bar, go to System Settings and tap on the "Disable Handset" icon (the first icon to the right side) to turn it on. Once turned on, when users pick up handset or puts the handset back while running the 3rd party apps, the audio channel will be toggled between handset and speakerphone.
When my mobile phone is connected with GXP2140/GXP2160 via Bluetooth hands free mode, can I pick up GXP phone’s incoming from my mobile phone?
No, mobile phone cannot act as Bluetooth headset role. When your mobile phone is connected with GXP2140/2160 via Bluetooth hands free mode, you can answer/terminate the mobile phone’s incoming call on GXP phone. Note: The original GA 188.8.131.52 build only supports connecting to Bluetooth Headsets. The current Beta 184.108.40.206 supports both connecting to Bluetooth Headsets and Bluetooth Phones (one at a time).
When will I be forwarded to the voice mailbox and how do I leave a message for the callee?
The IPvideoTalk server will forward the caller to the voicemail box of the callee when the callee is in the following states: (1)No answer. When the ring times out, the call will be forwarded to the voicemail. (2)The callee is busy and rejects the call. (3)The callee enables the DND (Do-Not-Disturb) feature on the phone. (4)The other party is not registered on the IPVideTalk server. The voicemail system prompt will ask you to leave a message after the beep tone. After you hear the voicemail system prompt asking you to leave the message after the beep tone, you are able to leave the message for the other user. The message will be saved on the server and the user can retrieve it at a later time. The GXV3140 is also able to record the video with the audio, making it a video voice message.