# Bridge\_simple and bridge\_softmix difference **URL:** \ **Category:** Asterisk Support\ **Created:** [December 27, 2016, 7:20am UTC](https://community.asterisk.org/t/bridge-simple-and-bridge-softmix-difference/69193 "2016-12-27T07:20:51Z")\ **Posts on this page:** 3\ **Page:** 1
**Author:** ![Lexus45](https://avatars.discourse-cdn.com/v4/letter/l/f0a364/32.png) [@Lexus45](https://community.asterisk.org/u/Lexus45)\ **Post date:** [December 27, 2016, 7:20am UTC](https://community.asterisk.org/t/bridge-simple-and-bridge-softmix-difference/69193/1 "2016-12-27T07:20:51Z")
Hello all. Can anybody tell me what’s the difference between bridge\_simple.so and bridge\_softmix.so ? All I know is the situation with Asterisk 13.1. It filled the logfile with `WARNING: chan_sip sip_write: Cant' send 10 type frames with SIP write` When I started using bridge\_softmix.so instead of bridge\_simple.so it became OK. But now I’m just interested what’s the difference and where it is better to use each module. ---
**Author:** ![jcolp](https://sea1.discourse-cdn.com/asterisk/user_avatar/community.asterisk.org/jcolp/32/8848_2.png) [@jcolp](https://community.asterisk.org/u/jcolp)\ **Post date:** [December 27, 2016, 11:53am UTC](https://community.asterisk.org/t/bridge-simple-and-bridge-softmix-difference/69193/2 "2016-12-27T11:53:53Z")
The bridge\_softmix module is more heavy weight as it gets data from each channel, transcodes it into signed linear, mixes it at an interval, and then sends it out. Even for 2 channel bridges it will do this. The bridge\_simple module simply exchanges data back and forth without mixing. Frame type 10 is comfort noise which is not currently supported by Asterisk. ---
**Author:** ![Lexus45](https://avatars.discourse-cdn.com/v4/letter/l/f0a364/32.png) [@Lexus45](https://community.asterisk.org/u/Lexus45)\ **Post date:** [December 29, 2016, 1:20pm UTC](https://community.asterisk.org/t/bridge-simple-and-bridge-softmix-difference/69193/3 "2016-12-29T13:20:53Z")
jcolp, thank you for your answer.