Compatible devices

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Here you can find a list of devices that are know to work well with our service.
Note: Minimum firmware version is the version installed on devices that are currently using our service, doesn't mean that firmware with lower version will not work fine. Anyway, is recommended to upgrade your firmware to the latest version



Aastra logo.JPG

Model Min. Firmware/ver Auto provision Notes
480i 1.4.3 Yes Discontinued
480i CT 1.3.1 Yes Discontinued
6731i 2.5.1.41 No
6753i (53i) 2.5.2.30 Yes
6755i (55i) 2.5.2.1010 Yes
6757i (57i) 2.5.2.30 Yes
6757i CT (57i CT) 2.5.2.30 Yes
9112i 1.4.3 Yes Discontinued
9113i 1.4.3 Yes Discontinued
9143i 2.4.1.37 No
9480i (35i) 2.5.0.2000 Yes
9480i CT (35i CT) 2.0.5.1026 No


Cisco-logo.gif Linksys logo.jpg Sipura logo.gif

Model Min. Firmware/ver Auto provision Notes
PAP2 3.1.5(LS) No
PAP2T 3.1.15(LS) No
RT31P2 3.1.7(LIa) No
SPA504G 7.4.7 Yes
SPA525G 7.4.3 Yes
SPA841 3.1.4(a) No
SPA921 4.1.10(b) Yes
SPA941 4.1.8 Yes
SPA942 5.1.15(a) Yes
SPA1001 3.1.8(SEc) No
SPA2002 3.1.2(a) No
SPA2102 3.2.8(d) Yes
SPA3102 3.3.6(GW) No
SPA8000 6.1.3 No
WRP400 2.00.05 No
WRTP54G 3.1.22 No


Grandstream logo.jpg

Model Min. Firmware/ver Auto provision Notes
Handytone HT286 No
Handytone HT486 1.0.8.33 Yes can be ht487 with some firmware version
GXP2000 1.1.6.16 No
GXP2010 1.2.2.26 Yes
GXP2020 1.1.6.46 No


Polycom logo.jpg

Model Min. Firmware/ver Auto provision Notes
SoundPoint IP 320/330 3.0.4.0061 Yes Discontinued
SoundPoint IP 335 3.2.3.1734 Yes
SoundPoint IP 450 3.2.3.1734 Yes
SoundPoint IP 550 3.0.4.0061 Yes
SoundPoint IP 650 3.0.0.0258 Yes
SoundStation IP 5000 3.2.3.1734 Yes
SoundStation IP 7000 3.2.3.1734 Yes


Yealink logo.jpg

Model Min. Firmware/ver Auto provision Notes
SIP-T10 n/a No


Snom logo.JPG

Model Min. Firmware/ver Auto provision Notes
300 6.5.20 Yes
320 6.5.4 Yes autoprovision supported for firmware version 7.x
360 6.5.17 No Discontinued
370 7.3.30 Yes

Routers compatibility

Not all NAT firewall/routers can handle voice traffic properly. Symptoms of this include inability to receive calls inbound, dropped calls and no one being able to hear caller when placing an outbound call. Most firewall/router devices have firmware upgrades available to deal with SIP properly, so its always good measure to upgrade to the latest stable firmware.

Note: Many older devices have no updated firmware and may need to be replaced.

  • AOpen Broadband Routers Work fine.
  • Cisco PIX 501 - 525 Version 6.3 firmware and greater works with or without SIP handling enabled.
  • Cisco IOS with SIP CBAC disabled
  • D-Link DI-604 and friends have some problems with early NAT timeouts, causing temporary failures.
  • Linksys WRT54G Hardware version 5 requires new firmware immediately after being removed from its box.Version 4 and older are fine.
  • Linksys WRT54C All versions appear to work fine.
  • Linksys WRT54GS (non SRX model) All versions appear to work fine.
  • Linksys SRX gear (all models thus far) cause registration problems with Sipura/PAP2 devices. NAT keep alive fails which results in loss of inbound calling.
  • Linux IPTables Works fine, sometimes needs higher UDP timeout setting, but not normally
  • OpenBSD software firewalls (FreeBSD works fine, OpenBSD loses NAT sessions)
  • SPA-2100/SPA-2102 as a router by itself works fine (with other VoIP behind it)
  • TP-LINK TL-WR641G and TL-WR642G works fine.
  • Windows 2000/2003/XP Firewall/NAT- Not a good thing, introduces extreme jitter into the stream, but works