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T25

T25

Voice and DOCSIS 3.1

40 Topics
78 Replies

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40 Topics

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mgalletlyThe Many

asked in T25

T25 password for GUI interface

I have a T25 on Xfinity.I tried to logon to the modem at 192.168.100.1 and username “admin” password of “password” returns invalid credentials.I don’t remember changing it, but I probably did at some point.How do I reset the device to default username and password? I’m sure I’ll have to re-register it with Comcast/Xfinity for it to work again, but that’s no big deal.I need to get information off of it, and see if maybe there’s a firmware update available, etc.

3 days ago

ElavyThe Many

asked in T25

yrdwThe Many

asked in T25

Use T25 Modem as Voice Gateway Only

I bought a T25 modem to use only for a voice line. I have an SBG8300 Modem / Router, and need to connect the two. I can’t seem to figure out the correct sequence and configuration for the 2 devices.Any help would be greatly appreciated. Thanks in advance.

19 days ago

Len_JacobsonThe Many

asked in T25

How To Find My Arris Router's Settings for T25

I have an Arris T25 router in place for a few years and suddenly, it seems that it is blocking traffic coming to my router on Port 21. I need to see my settings, but entering 192.168.86.1 into a browser simply tells me it’s ONLINE; it doesn’t show me my settings.Can you please tell me how to see my settings?Thank you.Len Jacobson

23 days ago

steve-tuttleThe Many

asked in T25

how to change WiFi password on T25 modem?

I need to change my WiFi password. The T25 was provided by my A/V contractor (so I wouldn’t have to rent from Xfinity). The Arris consumer care instructions says to access cable modem interface and that does not work (you get an error code, I’ve tried from a PC and an iPad). The Xfinity instructions do not work either. They say their instructions only work with Xfinity provided modems

1 month ago

steve-tuttleThe Many

asked in T25

change WiFi password for T25 modem

I have a T25 modem that my A/V contractor installed (so I wouldn’t have to pay Xfinity a monthly rental). I’ve tried YouTube and the internet. shown online does not work

1 month ago

LotusM50The Many

asked in T25

Hardware and software version for t25 modem

I see 2 different T25’s with different specifications. Are there 2 versions? On older one and an updated one?I see one with “32 downstream x 8 upstream DOCSIS 3.0 channels, 2 downstream x 2 upstream OFDM DOCSIS 3.1 channels” & 2GB max speed, and another with “32 downstream x 8 upstream DOCSIS 3.1 bonded channels and 2 downstream x 2 upstream OFDM channels” with with up to 10GB speed, without any mention of the DOCSIS 3.0 spec.What’s the difference? Hardware, firmware, or something else? Thanks!

1 month ago

errachitThe Many

asked in T25

surfboard t25 not connecting with all modem lights on

My surfboard T25 suddenly stopped connecting to internet and all modem lights are constantly ON even after I restarted and resetted multiple times.

1 month ago

EMamrolThe Many

asked in T25

Arris T25

Here's my humorous situation. I'm not at home right now & I didn't take screenshots of my T25. I'm trying to find out the WiFi name & password so I can activate my Xfinity TV Flex box, landline & internet. I don't want to waste your time & no clue what the serial number is & whatnot. Left brochure w/ Arris customer service phone number at home. The other thing is I keep being misinformed what the proper Arris model is by Xfinity, Best Buy & Arris. Basically, I'm not the greatest techie, I need to at least verify the T25 will enable me to use my Xfinity Flex Box for my TV, my Xfinity landline & internet connection. I've purchased (3) Arris modems so far yet I keep jumping back & forth between Xfinity & Arris on the correct model. I can find out the Arris model I recently purchased from Amazon but I'd like to return it if the T25 serves my needs. I realize it's not your fault that I got stuck w/ (3) Arris modems so far. Rather humorous trying to sell m

2 months ago

jplwThe Many

asked in T25

slow speed connection in T25

Xfinity just raised my upload speed from 25 to 100, yet I do not get the higher speed, even after restarting the T25. Should the T25 be able to support 100 UP? Is this an Xfinity issue? As usual, XFinity is brain-dead on this topic.

2 months ago

agtpack12The Many

asked in T25

can’t connect to T25

I connected my new modem, cable is working but I can’t connect the internet and phone

2 months ago

jsowersThe Many

asked in T25

voice issues T25

No dial tone

2 months ago

lpreynaudThe Many

asked in T25

Accessing WebManager

I recently installed a new T25 modem at home. Everything seems to function OK but when I try to login to the Web Manager at 192.168.100.1 I get a 404 Not Found error. Does anyone have any idea what I’m doing wrong?

3 months ago

henryellingsenThe Many

asked in T25

T25 Front panel LEDS very dim.

I’ll try this subject again. The front panel leds on my T25 panel are so dim they almost appear to be non functioning. They only way I can confirm is the unequipped telephone line 2 is several shades of gray darker than line 1. They may have been that way from the beginning, but can’t ever remember seeing a lit LED be so dim in brightness. Just wanted to know if this is normal.

3 months ago

danslexus19The Many

asked in T25

ISP tells me there is something wrong with ICFR

Sorry IFCR, not ICFR. Though I am having no issues, my ISP (Xfinity) was looking at my modem on their end and are stating:“that the IFCR is too high. It is fluctuating too much for the channel it is in” I sent them the info on the channels which they say is in spec, but wont provide me what they see that is leading them to be concernedAny help is appreciatedDownstream QAM DCID Freq Power SNR Modulation Octets Correcteds Uncorrectables Downstream 1 17 483.00 MHz 3.60 dBmV 40.37 dB 256QAM 1473955869 6 0 Downstream 2 1 387.00 MHz 3.70 dBmV 40.37 dB 256QAM 20811007 0 0 Downstream 3 2 393.00 MHz 3.70 dBmV 40.37 dB 256QAM 71266727 0 0 Downstream 4 3 399.00 MHz 3.80 dBmV 40.37 dB 256QAM 69689242 0 0 Downstream 5 4 405.00 MHz 3.70 dBmV 40.37 dB 256QAM 70025644 0 0 Downstream 6 5 411.00 MHz 3.70 dBmV 38.98 dB 256QAM 1457379349 32 0 Downstream 7 6 417.00 MHz 3.70 dBmV

3 months ago

JohnnyuThe Many

asked in T25

the app doesn't show model T25 model

Download app but there’s no install info for the T25 model ?

3 months ago

DaveBaughThe Many

asked in T25

Unable to connect telephonic line

New Arris modem, t25, on Comcast cable. Power, cable, Ethernet & phone lines all connected. Internet/Wi-Fi work fine. No dial tone on phone? Suggestions.

3 months ago

henryellingsenThe Many

asked in T25

Can hardly see modem lights

The modem lights on my T25 are very dim. I remember them to be much brighter. They also look amber in color. Has something been done to cause this?

3 months ago

Roberts123The Many

asked in T25

T25 bridge mode

How do I get my T25 out of bridge mode? I can log in using 192.168.100.1but I don’t see that option. If I perform a factory reset will that do the same thing? Once in standard mode, can I go through my new switch to get wired and wireless devices to the internet from XFinity?

4 months ago

The OneThe Many

asked in T25

T25 experiencing T3 and T4 errors

I have been dealing with this issues for quite sometime. And comcast is trying to implicate that there is nothing wrong with the lines yet these error messages are very specific in what's happening. The tech arrived today to tell me that the lines are okay. But the presence of the error codes he could not tell me why they was showing other than the issue is on the modem. Which is a classic move for Comcast. I am asking the community if they have experience this phenomenon. What is the solution?

4 months ago

turnquistThe Many

asked in T25

Caller ID Problems T25

Periodically the modem won’t display the caller ID on the phone, just says incoming call. Ate the same time the voice on the phone call becomes scratchy. Reboot modem and all is well for a while again.

4 months ago

edpomThe Many

asked in T25

Repeated random connection resets with Comcast/Xfinity cable voice modem T25

I am on my 3rd Arris T25 install in the past 3 weeks. Each install works, shows on the Xfinity app as connected, but randomly resets with loss of connection for 2 to 5 minutes each time.Can go several hours without a drop, then drop randomly between 5 minutes and 30 minutes between events.System was working perfectly with the Xfinity leased voice/wifi/cable modem. Nothing changed other than replacing their modem for the purchased T25 non WIFI unit, .I have always used my own WIFI router. This driving me nuts and no support from Comcast other than trying to send a tech for 100 bucks / visit to analyze my end.. As an engineer, replacing a perfectly working system/modem with another modem means my system is 100% normal, unless the spec on the Arris T25 is remarkably different from that of the Xfinity modem. As the T25 is approved for use by Xfinity, what the heck is going on?Thanks

5 months ago

Sendo427The Many

asked in T25

surfboard central app network refresh problem

Hi every time I try to refresh the network on the app it just shows me the fing advertisement and then I press later and it doesn't do anything.

6 months ago

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