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Scarborough, ON
·Rogers Hi-Speed

How is the built in router in HT502

Has anybody tested the built in router performance of the Grandstream HT502 ATA ?
I know it's not recommended to use the built in router but I have a customer who really wants to have an ATA like that and I know the SPA210x performance is rather poor, I wonder if the HT502 is the same.
Providers (through asterisk):, freephoneline,, ipcomms, callcentric. Hardware: Vonage VDV21, Moto VT2x42, Linksys SPA series, Grandstream HT series, Panasonic KX-TGP5x0

Gershom 1624
I've liked Grandstream's good old 286.


I had the 486 a few years ago, which AFAIK is similar to the 502 in terms of a router.

IIRC and FWIW, the router/firewall controls on the 486 were much less sophisticated than you would have on a "real" router, and the throughput speed was disappointing.

Also, the whole darn thing burned out on me. It started malfing and then a few days later was totally fried and gone. Again, this was the 486.


Porter, TX
reply to toro
There's definitely a lack of speed testing with regards to this ATA in the NAT mode. I only came up with one thread where the user only saw about 50% reduction in speed (max of 30-40Mbs), which was significantly better than the SPA2102 maximum speed of 7Mbs.

» ··· Question


San Jose, CA
reply to toro
I have ht-503 and I am using their router. ( does not work behind dd-wrt directly or with their sip proxy). I do not see any performance issue. But I only have 15 mb comcast line.


reply to toro
Does anyone have any information about the quality of other routers in ATAs like the SPA122 and OBi202?

Villains... knock off all that evil

Castle Rock, CO
reply to toro
I have this ATA/router and I’d say its performance is pretty sh*tty. While I wouldn’t put anything I cared about behind it, I have a non-standard configuration at home and the device that sits behind it relies on its NAT and can’t do more than 10Mbps. The rest of my network is behind a GigE firewall/router and does not have this limitation. That said though, I have not done any legitimate performance testing of this device so please take the above with a grain of salt.