Anybody use a wi-fi/GSM phone? (UMA/GSM)?

Stu · 28-10-2007, 03:49

My experiments were about the same. Over HSDPA, the quality was ok. Over EDGE it was two way radio quality at best. Perhaps if you put a beep in it and treated it as push to talk or something.

Update: I just tried Fring on my E61 (on EDGE) and the connection quality was acceptable. Not great, but workable.

VladS · 31-10-2007, 17:19

My E61 works fairly well over EDGE (on Cingular) using iLBC as the codec. I wouldn't bother with g729 as Nokia's implementation is terrible.

Most VISPs don't support iLBC but you can always use Asterisk as a transcoding proxy.

DRNewcomb · 02-11-2007, 03:52

Quote:

Originally Posted by VladS

My E61 works fairly well over EDGE (on Cingular) using iLBC as the codec. I wouldn't bother with g729 as Nokia's implementation is terrible.

Most VISPs don't support iLBC but you can always use Asterisk as a transcoding proxy.

Vlad,
This is very interesting but could you explain what iLBC and Asterisk are?

VladS · 02-11-2007, 18:03

Quote:

Originally Posted by DRNewcomb

This is very interesting but could you explain what iLBC and Asterisk are?

Asterisk is an open source (as in free) soft PBX running on Linux or FreeBSD. It runs great on most x86 type PCs, even older ones. While my personal preference is to build it from the ground up there are several pre-built versions of Asterisk for those with limited Linux experience. Trixbox is one of them.

iLBC stands for internet Low Bit Rate Codec. It has several advantages over the well know g729a/b codec such as: royalty free and predictive response to jitter, delay and packet loss.

Several forum members have been using Asterisk type solutions to route calls to and from global and national SIMs for quite some time.

	(#1)
Stu (Offline) Senior Member Prepaid Guru Posts: 1,091 Join Date: 11 Feb 2004 Location: Detroit (formerly Dubai) Country:	28-10-2007, 03:49 My experiments were about the same. Over HSDPA, the quality was ok. Over EDGE it was two way radio quality at best. Perhaps if you put a beep in it and treated it as push to talk or something. Update: I just tried Fring on my E61 (on EDGE) and the connection quality was acceptable. Not great, but workable. Last edited by Stu; 28-10-2007 at 18:16..

	(#2)
VladS (Offline) Senior Member Prepaid Pioneer Posts: 590 Join Date: 22 Jun 2004 Country:	31-10-2007, 17:19 My E61 works fairly well over EDGE (on Cingular) using iLBC as the codec. I wouldn't bother with g729 as Nokia's implementation is terrible. Most VISPs don't support iLBC but you can always use Asterisk as a transcoding proxy. VladS Mobile phones: iPhone 5, Blackberry 9900, Nexus S, Samsung S3322 duos Mobile data cards: Huawei E587u-5, Huawei E583c, Huawei E160 Postpaid SIMs: CA: Fido, Wind; INTL: Telna Prepaid SIMs: DE: Fonic, Lidl; AT: yesss!, bob; UK: O2; US: AT&T; RO: Orange, Vodafone; FR: b&you, Lycamobile; NL: Lycamobile; BE: Lycamobile, Jim Mobile; CL: Entel; MX: Telcel; INTL: eKit Blue, eKit Yellow Dead SIMs: too many to list