The voice quality issues are the latest indication that AT&T's Microcell service is off to a bumpy start. The user complaints follow a recent problem with service activations as well as the controversy over the data pricing policy for the Microcell, which is supplied by Cisco Systems Inc. (Nasdaq: CSCO) and uses femtocell technology from ip.access Ltd. (See AT&T Suffers Femto Activation 'Issues', AT&T Defends Data Caps on Femtos , AT&T Enforces Data Cap on Femtos , and AT&T's 3G Femtocells Now in More US Cities.)
But even though users have documented their service problems on AT&T's online user support forum, the operator is not offering an explanation for the latency troubles. In response to Light Reading Mobile's questions about the service quality issues, an AT&T spokeswoman said the operator would not be providing information.
There are recent user discussion threads covering problems with voice latency, dropped calls, and even service outages. Some examples of discussion subjects include "3G Microcell calls rapidly 'skip'" and "microcell dropping calls like its [sic] possessed."
Here's a sampling of the recent user complaints about voice latency:
- The lag is just so bad that I want to return the thing since it's useless to carry on a conversation… That and garbled voice as well at times… Someone suggested we get new sims [sic] on both our iPhones so I am going to try that next week and if it doesn't work... back goes the Microcell.
- I have the exact the same issue with the voice latency, as well as having calls dropped and some static hiss… The latency issue as many have said is extremely annoying especially as my husband was trying to conduct job interviews. We're still within the 30 day return policy and unless this can be resolved soon, it's not reliable enough to keep it.
- Roughly between 500ms and 1000ms latency during calls. There seem to be instances, where it is getting less obviously
There are other users in the discussion groups that report no problems with voice lag or latency, so it is not clear how widespread these problems are or what is causing them.
— Michelle Donegan, European Editor, Light Reading Mobile