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SIP Trunks and Music On Hold

May 18, 2015 11:55 AM PDT
Dwayne Sloan
PCM Networking aka PC Mechanics Inc
We plan on utilizing SIP trunks for a multi site customer. All inbound calls will come into the data center via SIP Trunks on a single SG220T1. My understanding is that all MoH for this configuration must come from the switch and that I must enable hairpinning along with a media proxy resource for each MoH stream. Can someone confirm this is correct? This seems to be a serious limitation for a somewhat basic function? I'm seriously considering staying with PRI's for this configuration.


Jun 29, 2016 12:08 PM PDT
Josh Martin
Converged Technology Professionals Inc
File based MoH hairpins and requires sip trunks with media proxies, which drops your sip trunks on a SG220 down to like 24 or something. IF you use a vTrunk switch you can get alot more media proxies.

If you use jack based MoH and the MP3 player is connected to the 220 in which the trunks are on I think it would work without media proxies/hairpin as it did work that way in version 12 before media proxies.

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