Posted in coupons Heavy Discount on Sangoma Expansion Model EXP100 for S500 and S700 Phones. 20 Programmable buttonswith 2 pages for a tot… May 23, 2021 Leave a Comment on Heavy Discount on Sangoma Expansion Model EXP100 for S500 and S700 Phones. 20 Programmable buttonswith 2 pages for a tot… Heavy Discount on Sangoma Expansion Model EXP100 for S500 and S700 Phones. 20 Programmable buttonswith 2 pages for a total of 40 LCD BLF capable buttons. – TAA READ MORE