Network/Obi202 IP address change - Status offline - How to restore config?
BGood:
Before installing the D-Link DIR-615 I updated its firmware to the latest revision (Hardware Version: C1 Firmware Version: 3.13NA). This was the cable modem/router I used before subscribing to Comcast's Xfinity triple-play and using the Arris TG862 that supposedly worked best with Comcast telephony.
The Obi202 was installed and tested in parallel with Comcast Voice before porting the telephone numbers out to Ting, Google Voice, and RingTo. After porting, I terminated the Comcast Voice subscription and had the Obi202 working with both numbers using only the modem/router functionality of the Arris TG862.
I am not averse to buying a new cable modem/router if the D-Link DIR-615 is not suitable for telephony purposes, and replace the DIR-615 with a newer model which would enable gigabit switching for NAS. But most of the network is set up for fast ethernet, and a gigabit upgrade is otherwise not necessary. I also have Linksys and SonicWall modem/routers in standby inventory.
Given that the Obihai/D-link glitch has killed land line telephone service at the house, and my Sprint Airave also was a victim of the network reconfiguration, I am under a lot of pressure to get the Obi202 working with the DIR-615 or another more compatible modem/router. I am not inclined to run the entire network (about 2 dozen devices including Unix and Windows servers) through the Obi202's router, whether bridged or not.
I have opened an Obihai support ticket to help determine if the D-Link can be reconfigured to play with the Obi202, but if it cannot, I would appreciate any recommendations regarding other modem/routers to purchase.
Thanks again for your helpful suggestions.
azrobert:
You could try installing the DD-WRT firmware on your router. The DIR-615 is in their router database, but it also must match the revision number.
http://www.dd-wrt.com/site/support/router-database
SteveInWA:
Any current-generation router from any major brand would work.
There were multiple different hardware versions of the DIR-615. Hardware version C (3.x firmware) was the dud. If you have upgraded the firmware, you may now be able to find and disable the SIP application layer gateway (SIP ALG) function in the router, which may solve the problem.
Again, this is not specific to Obihai; that version C router simply did not work with VoIP protocol at all.
https://support.onsip.com/hc/en-us/articles/203706874-D-Link-DIR-615-Wireless-N-Router
https://www.google.com/search?q=dir-615+sip&rlz=1CAACAO_enUS670US670&oq=dir-615+sip&aqs=chrome..69i57.4957j0j1&sourceid=chrome&es_sm=122&ie=UTF-8
BGood:
Thanks, SteveInWA, I think your comments about the D-Link DIR-615 are appropriate. Apparently, most older home routers have problems with VOIP traffic and the issues I encountered are not related to the Obihai ATA.
As an epilog follow-up to this post, I was eventually able to get the Obi202 working with three routers: the Comcast Arris TG862 I was leasing from Comcast; the D-Link DIR-615 I resurrected from mothballs; and the Sonicwall TZ-170 which also came from the storage closet. Although I think it is a little older, I settled on the Sonicwall because it seems to be a better router and the firmware is more reliable. Frankly, I got scared about steveinWA's comments and the following reported problems with VOIP through the D-Link:
http://forums.dlink.com/index.php?topic=8273.msg49073#msg49073
http://forums.dlink.com/index.php?topic=7616.msg74715#msg74715
http://forums.dlink.com/index.php?topic=37191.msg119924#msg119924
http://forums.dlink.com/index.php?topic=12055.msg71495#msg71495
http://forums.dlink.com/index.php?topic=5716.msg49033#msg49033
I posted my own experience on the dlink.com website under "DIR-615 and VOIP compatibility" (http://forums.dlink.com/index.php?topic=64016.0), but my working DIR-615 configuration included: putting the Obi in the DMZ with QoS enabled; and disabling SIP ALG. Despite this DIR-615 configuration working with the Obi202, I decided to repurpose the DIR-615 as a wireless access point rather than a router.
The Sonicwall TZ-170 appears to be a cleaner working configuration and did not require exposing the Obi202 in the DMZ. The working configuration simply has consistent NAT enabled and seems to work whether require SIP Transformations are enabled or disabled (mine are enabled). My TZ-170 firmware is the standard version which does not have explicit QoS settings.
Hope this helps others trying to get VOIP to work with an older home router.
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